20425860

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:107

約数の個数: 288

約数和(自身を含む): 80720640

約数和(自身を除く): 60294780

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 29, 30, 35, 36, 39, 42, 43, 45, 52, 58, 60, 63, 65, 70, 78, 84, 86, 87, 90, 91, 105, 116, 117, 126, 129, 130, 140, 145, 156, 172, 174, 180, 182, 195, 203, 210, 215, 234, 252, 258, 260, 261, 273, 290, 301, 315, 348, 364, 377, 387, 390, 406, 420, 430, 435, 455, 468, 516, 522, 546, 559, 580, 585, 602, 609, 630, 645, 754, 774, 780, 812, 819, 860, 870, 903, 910, 1015, 1044, 1092, 1118, 1131, 1170, 1204, 1218, 1247, 1260, 1290, 1305, 1365, 1505, 1508, 1548, 1638, 1677, 1740, 1806, 1820, 1827, 1885, 1935, 2030, 2236, 2262, 2340, 2436, 2494, 2580, 2610, 2639, 2709, 2730, 2795, 3010, 3045, 3276, 3354, 3393, 3612, 3654, 3741, 3770, 3870, 3913, 4060, 4095, 4515, 4524, 4988, 5031, 5220, 5278, 5418, 5460, 5590, 5655, 6020, 6090, 6235, 6708, 6786, 7308, 7482, 7540, 7740, 7826, 7917, 8190, 8385, 8729, 9030, 9135, 10062, 10556, 10836, 11180, 11223, 11310, 11739, 12180, 12470, 13195, 13545, 13572, 14964, 15652, 15834, 16211, 16380, 16770, 16965, 17458, 18060, 18270, 18705, 19565, 20124, 22446, 22620, 23478, 23751, 24940, 25155, 26187, 26390, 27090, 31668, 32422, 33540, 33930, 34916, 35217, 36540, 37410, 39130, 39585, 43645, 44892, 46956, 47502, 48633, 50310, 52374, 52780, 54180, 56115, 58695, 64844, 67860, 70434, 74820, 78260, 78561, 79170, 81055, 87290, 95004, 97266, 100620, 104748, 112230, 113477, 117390, 118755, 130935, 140868, 145899, 157122, 158340, 162110, 174580, 176085, 194532, 224460, 226954, 234780, 237510, 243165, 261870, 291798, 314244, 324220, 340431, 352170, 392805, 453908, 475020, 486330, 523740, 567385, 583596, 680862, 704340, 729495, 785610, 972660, 1021293, 1134770, 1361724, 1458990, 1571220, 1702155, 2042586, 2269540, 2917980, 3404310, 4085172, 5106465, 6808620, 10212930, 20425860]

約数ペア:

[(1, 20425860), (2, 10212930), (3, 6808620), (4, 5106465), (5, 4085172), (6, 3404310), (7, 2917980), (9, 2269540), (10, 2042586), (12, 1702155), (13, 1571220), (14, 1458990), (15, 1361724), (18, 1134770), (20, 1021293), (21, 972660), (26, 785610), (28, 729495), (29, 704340), (30, 680862), (35, 583596), (36, 567385), (39, 523740), (42, 486330), (43, 475020), (45, 453908), (52, 392805), (58, 352170), (60, 340431), (63, 324220), (65, 314244), (70, 291798), (78, 261870), (84, 243165), (86, 237510), (87, 234780), (90, 226954), (91, 224460), (105, 194532), (116, 176085), (117, 174580), (126, 162110), (129, 158340), (130, 157122), (140, 145899), (145, 140868), (156, 130935), (172, 118755), (174, 117390), (180, 113477), (182, 112230), (195, 104748), (203, 100620), (210, 97266), (215, 95004), (234, 87290), (252, 81055), (258, 79170), (260, 78561), (261, 78260), (273, 74820), (290, 70434), (301, 67860), (315, 64844), (348, 58695), (364, 56115), (377, 54180), (387, 52780), (390, 52374), (406, 50310), (420, 48633), (430, 47502), (435, 46956), (455, 44892), (468, 43645), (516, 39585), (522, 39130), (546, 37410), (559, 36540), (580, 35217), (585, 34916), (602, 33930), (609, 33540), (630, 32422), (645, 31668), (754, 27090), (774, 26390), (780, 26187), (812, 25155), (819, 24940), (860, 23751), (870, 23478), (903, 22620), (910, 22446), (1015, 20124), (1044, 19565), (1092, 18705), (1118, 18270), (1131, 18060), (1170, 17458), (1204, 16965), (1218, 16770), (1247, 16380), (1260, 16211), (1290, 15834), (1305, 15652), (1365, 14964), (1505, 13572), (1508, 13545), (1548, 13195), (1638, 12470), (1677, 12180), (1740, 11739), (1806, 11310), (1820, 11223), (1827, 11180), (1885, 10836), (1935, 10556), (2030, 10062), (2236, 9135), (2262, 9030), (2340, 8729), (2436, 8385), (2494, 8190), (2580, 7917), (2610, 7826), (2639, 7740), (2709, 7540), (2730, 7482), (2795, 7308), (3010, 6786), (3045, 6708), (3276, 6235), (3354, 6090), (3393, 6020), (3612, 5655), (3654, 5590), (3741, 5460), (3770, 5418), (3870, 5278), (3913, 5220), (4060, 5031), (4095, 4988), (4515, 4524)]