20628080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{2131}}^1$

素因数の和:2166

約数の個数: 60

約数和(自身を含む): 52741416

約数和(自身を除く): 32113336

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 220, 242, 440, 484, 605, 880, 968, 1210, 1936, 2131, 2420, 4262, 4840, 8524, 9680, 10655, 17048, 21310, 23441, 34096, 42620, 46882, 85240, 93764, 117205, 170480, 187528, 234410, 257851, 375056, 468820, 515702, 937640, 1031404, 1289255, 1875280, 2062808, 2578510, 4125616, 5157020, 10314040, 20628080]

約数ペア:

[(1, 20628080), (2, 10314040), (4, 5157020), (5, 4125616), (8, 2578510), (10, 2062808), (11, 1875280), (16, 1289255), (20, 1031404), (22, 937640), (40, 515702), (44, 468820), (55, 375056), (80, 257851), (88, 234410), (110, 187528), (121, 170480), (176, 117205), (220, 93764), (242, 85240), (440, 46882), (484, 42620), (605, 34096), (880, 23441), (968, 21310), (1210, 17048), (1936, 10655), (2131, 9680), (2420, 8524), (4262, 4840)]