20544920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{881}}^1$

素因数の和:956

約数の個数: 64

約数和(自身を含む): 51438240

約数和(自身を除く): 30893320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 53, 55, 88, 106, 110, 212, 220, 265, 424, 440, 530, 583, 881, 1060, 1166, 1762, 2120, 2332, 2915, 3524, 4405, 4664, 5830, 7048, 8810, 9691, 11660, 17620, 19382, 23320, 35240, 38764, 46693, 48455, 77528, 93386, 96910, 186772, 193820, 233465, 373544, 387640, 466930, 513623, 933860, 1027246, 1867720, 2054492, 2568115, 4108984, 5136230, 10272460, 20544920]

約数ペア:

[(1, 20544920), (2, 10272460), (4, 5136230), (5, 4108984), (8, 2568115), (10, 2054492), (11, 1867720), (20, 1027246), (22, 933860), (40, 513623), (44, 466930), (53, 387640), (55, 373544), (88, 233465), (106, 193820), (110, 186772), (212, 96910), (220, 93386), (265, 77528), (424, 48455), (440, 46693), (530, 38764), (583, 35240), (881, 23320), (1060, 19382), (1166, 17620), (1762, 11660), (2120, 9691), (2332, 8810), (2915, 7048), (3524, 5830), (4405, 4664)]