21556480

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1531}}^1$

素因数の和:1563

約数の個数: 72

約数和(自身を含む): 56365344

約数和(自身を除く): 34808864

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 640, 704, 880, 1280, 1408, 1531, 1760, 2816, 3062, 3520, 6124, 7040, 7655, 12248, 14080, 15310, 16841, 24496, 30620, 33682, 48992, 61240, 67364, 84205, 97984, 122480, 134728, 168410, 195968, 244960, 269456, 336820, 391936, 489920, 538912, 673640, 979840, 1077824, 1347280, 1959680, 2155648, 2694560, 4311296, 5389120, 10778240, 21556480]

約数ペア:

[(1, 21556480), (2, 10778240), (4, 5389120), (5, 4311296), (8, 2694560), (10, 2155648), (11, 1959680), (16, 1347280), (20, 1077824), (22, 979840), (32, 673640), (40, 538912), (44, 489920), (55, 391936), (64, 336820), (80, 269456), (88, 244960), (110, 195968), (128, 168410), (160, 134728), (176, 122480), (220, 97984), (256, 84205), (320, 67364), (352, 61240), (440, 48992), (640, 33682), (704, 30620), (880, 24496), (1280, 16841), (1408, 15310), (1531, 14080), (1760, 12248), (2816, 7655), (3062, 7040), (3520, 6124)]