21520404

素因数分解:

$2^2\times 3^4\times {\mathrm{127}}^1\times {\mathrm{523}}^1$

素因数の和:666

約数の個数: 60

約数和(自身を含む): 56809984

約数和(自身を除く): 35289580

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 127, 162, 254, 324, 381, 508, 523, 762, 1046, 1143, 1524, 1569, 2092, 2286, 3138, 3429, 4572, 4707, 6276, 6858, 9414, 10287, 13716, 14121, 18828, 20574, 28242, 41148, 42363, 56484, 66421, 84726, 132842, 169452, 199263, 265684, 398526, 597789, 797052, 1195578, 1793367, 2391156, 3586734, 5380101, 7173468, 10760202, 21520404]

約数ペア:

[(1, 21520404), (2, 10760202), (3, 7173468), (4, 5380101), (6, 3586734), (9, 2391156), (12, 1793367), (18, 1195578), (27, 797052), (36, 597789), (54, 398526), (81, 265684), (108, 199263), (127, 169452), (162, 132842), (254, 84726), (324, 66421), (381, 56484), (508, 42363), (523, 41148), (762, 28242), (1046, 20574), (1143, 18828), (1524, 14121), (1569, 13716), (2092, 10287), (2286, 9414), (3138, 6858), (3429, 6276), (4572, 4707)]