21485100

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{787}}^1$

素因数の和:824

約数の個数: 144

約数和(自身を含む): 76606208

約数和(自身を除く): 55121108

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 25, 26, 28, 30, 35, 39, 42, 50, 52, 60, 65, 70, 75, 78, 84, 91, 100, 105, 130, 140, 150, 156, 175, 182, 195, 210, 260, 273, 300, 325, 350, 364, 390, 420, 455, 525, 546, 650, 700, 780, 787, 910, 975, 1050, 1092, 1300, 1365, 1574, 1820, 1950, 2100, 2275, 2361, 2730, 3148, 3900, 3935, 4550, 4722, 5460, 5509, 6825, 7870, 9100, 9444, 10231, 11018, 11805, 13650, 15740, 16527, 19675, 20462, 22036, 23610, 27300, 27545, 30693, 33054, 39350, 40924, 47220, 51155, 55090, 59025, 61386, 66108, 71617, 78700, 82635, 102310, 110180, 118050, 122772, 137725, 143234, 153465, 165270, 204620, 214851, 236100, 255775, 275450, 286468, 306930, 330540, 358085, 413175, 429702, 511550, 550900, 613860, 716170, 767325, 826350, 859404, 1023100, 1074255, 1432340, 1534650, 1652700, 1790425, 2148510, 3069300, 3580850, 4297020, 5371275, 7161700, 10742550, 21485100]

約数ペア:

[(1, 21485100), (2, 10742550), (3, 7161700), (4, 5371275), (5, 4297020), (6, 3580850), (7, 3069300), (10, 2148510), (12, 1790425), (13, 1652700), (14, 1534650), (15, 1432340), (20, 1074255), (21, 1023100), (25, 859404), (26, 826350), (28, 767325), (30, 716170), (35, 613860), (39, 550900), (42, 511550), (50, 429702), (52, 413175), (60, 358085), (65, 330540), (70, 306930), (75, 286468), (78, 275450), (84, 255775), (91, 236100), (100, 214851), (105, 204620), (130, 165270), (140, 153465), (150, 143234), (156, 137725), (175, 122772), (182, 118050), (195, 110180), (210, 102310), (260, 82635), (273, 78700), (300, 71617), (325, 66108), (350, 61386), (364, 59025), (390, 55090), (420, 51155), (455, 47220), (525, 40924), (546, 39350), (650, 33054), (700, 30693), (780, 27545), (787, 27300), (910, 23610), (975, 22036), (1050, 20462), (1092, 19675), (1300, 16527), (1365, 15740), (1574, 13650), (1820, 11805), (1950, 11018), (2100, 10231), (2275, 9444), (2361, 9100), (2730, 7870), (3148, 6825), (3900, 5509), (3935, 5460), (4550, 4722)]