21302820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1$

素因数の和:115

約数の個数: 288

約数和(自身を含む): 84913920

約数和(自身を除く): 63611100

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 28, 29, 30, 33, 35, 36, 42, 44, 45, 53, 55, 58, 60, 63, 66, 70, 77, 84, 87, 90, 99, 105, 106, 110, 116, 126, 132, 140, 145, 154, 159, 165, 174, 180, 198, 203, 210, 212, 220, 231, 252, 261, 265, 290, 308, 315, 318, 319, 330, 348, 371, 385, 396, 406, 420, 435, 462, 477, 495, 522, 530, 580, 583, 609, 630, 636, 638, 660, 693, 742, 770, 795, 812, 870, 924, 954, 957, 990, 1015, 1044, 1060, 1113, 1155, 1166, 1218, 1260, 1276, 1305, 1386, 1484, 1537, 1540, 1590, 1595, 1740, 1749, 1827, 1855, 1908, 1914, 1980, 2030, 2226, 2233, 2310, 2332, 2385, 2436, 2610, 2772, 2871, 2915, 3045, 3074, 3180, 3190, 3339, 3465, 3498, 3654, 3710, 3828, 4060, 4081, 4452, 4466, 4611, 4620, 4770, 4785, 5220, 5247, 5565, 5742, 5830, 6090, 6148, 6380, 6678, 6699, 6930, 6996, 7308, 7420, 7685, 8162, 8745, 8932, 9135, 9222, 9540, 9570, 10494, 10759, 11130, 11165, 11484, 11660, 12180, 12243, 13356, 13398, 13833, 13860, 14355, 15370, 16324, 16695, 16907, 17490, 18270, 18444, 19140, 20097, 20405, 20988, 21518, 22260, 22330, 23055, 24486, 26235, 26796, 27666, 28710, 30740, 32277, 33390, 33495, 33814, 34980, 36540, 36729, 40194, 40810, 43036, 44660, 46110, 48972, 50721, 52470, 53795, 55332, 57420, 61215, 64554, 66780, 66990, 67628, 69165, 73458, 80388, 81620, 84535, 92220, 96831, 100485, 101442, 104940, 107590, 118349, 122430, 129108, 133980, 138330, 146916, 152163, 161385, 169070, 183645, 193662, 200970, 202884, 215180, 236698, 244860, 253605, 276660, 304326, 322770, 338140, 355047, 367290, 387324, 401940, 473396, 484155, 507210, 591745, 608652, 645540, 710094, 734580, 760815, 968310, 1014420, 1065141, 1183490, 1420188, 1521630, 1775235, 1936620, 2130282, 2366980, 3043260, 3550470, 4260564, 5325705, 7100940, 10651410, 21302820]

約数ペア:

[(1, 21302820), (2, 10651410), (3, 7100940), (4, 5325705), (5, 4260564), (6, 3550470), (7, 3043260), (9, 2366980), (10, 2130282), (11, 1936620), (12, 1775235), (14, 1521630), (15, 1420188), (18, 1183490), (20, 1065141), (21, 1014420), (22, 968310), (28, 760815), (29, 734580), (30, 710094), (33, 645540), (35, 608652), (36, 591745), (42, 507210), (44, 484155), (45, 473396), (53, 401940), (55, 387324), (58, 367290), (60, 355047), (63, 338140), (66, 322770), (70, 304326), (77, 276660), (84, 253605), (87, 244860), (90, 236698), (99, 215180), (105, 202884), (106, 200970), (110, 193662), (116, 183645), (126, 169070), (132, 161385), (140, 152163), (145, 146916), (154, 138330), (159, 133980), (165, 129108), (174, 122430), (180, 118349), (198, 107590), (203, 104940), (210, 101442), (212, 100485), (220, 96831), (231, 92220), (252, 84535), (261, 81620), (265, 80388), (290, 73458), (308, 69165), (315, 67628), (318, 66990), (319, 66780), (330, 64554), (348, 61215), (371, 57420), (385, 55332), (396, 53795), (406, 52470), (420, 50721), (435, 48972), (462, 46110), (477, 44660), (495, 43036), (522, 40810), (530, 40194), (580, 36729), (583, 36540), (609, 34980), (630, 33814), (636, 33495), (638, 33390), (660, 32277), (693, 30740), (742, 28710), (770, 27666), (795, 26796), (812, 26235), (870, 24486), (924, 23055), (954, 22330), (957, 22260), (990, 21518), (1015, 20988), (1044, 20405), (1060, 20097), (1113, 19140), (1155, 18444), (1166, 18270), (1218, 17490), (1260, 16907), (1276, 16695), (1305, 16324), (1386, 15370), (1484, 14355), (1537, 13860), (1540, 13833), (1590, 13398), (1595, 13356), (1740, 12243), (1749, 12180), (1827, 11660), (1855, 11484), (1908, 11165), (1914, 11130), (1980, 10759), (2030, 10494), (2226, 9570), (2233, 9540), (2310, 9222), (2332, 9135), (2385, 8932), (2436, 8745), (2610, 8162), (2772, 7685), (2871, 7420), (2915, 7308), (3045, 6996), (3074, 6930), (3180, 6699), (3190, 6678), (3339, 6380), (3465, 6148), (3498, 6090), (3654, 5830), (3710, 5742), (3828, 5565), (4060, 5247), (4081, 5220), (4452, 4785), (4466, 4770), (4611, 4620)]