21581120

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{6131}}^1$

素因数の和:6159

約数の個数: 56

約数和(自身を含む): 56071008

約数和(自身を除く): 34489888

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 160, 176, 220, 320, 352, 440, 704, 880, 1760, 3520, 6131, 12262, 24524, 30655, 49048, 61310, 67441, 98096, 122620, 134882, 196192, 245240, 269764, 337205, 392384, 490480, 539528, 674410, 980960, 1079056, 1348820, 1961920, 2158112, 2697640, 4316224, 5395280, 10790560, 21581120]

約数ペア:

[(1, 21581120), (2, 10790560), (4, 5395280), (5, 4316224), (8, 2697640), (10, 2158112), (11, 1961920), (16, 1348820), (20, 1079056), (22, 980960), (32, 674410), (40, 539528), (44, 490480), (55, 392384), (64, 337205), (80, 269764), (88, 245240), (110, 196192), (160, 134882), (176, 122620), (220, 98096), (320, 67441), (352, 61310), (440, 49048), (704, 30655), (880, 24524), (1760, 12262), (3520, 6131)]