81497570

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1997}}^1$

素因数の和:2075

約数の個数: 64

約数和(自身を含む): 186437376

約数和(自身を除く): 104939806

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 53, 55, 70, 77, 106, 110, 154, 265, 371, 385, 530, 583, 742, 770, 1166, 1855, 1997, 2915, 3710, 3994, 4081, 5830, 8162, 9985, 13979, 19970, 20405, 21967, 27958, 40810, 43934, 69895, 105841, 109835, 139790, 153769, 211682, 219670, 307538, 529205, 740887, 768845, 1058410, 1164251, 1481774, 1537690, 2328502, 3704435, 5821255, 7408870, 8149757, 11642510, 16299514, 40748785, 81497570]

約数ペア:

[(1, 81497570), (2, 40748785), (5, 16299514), (7, 11642510), (10, 8149757), (11, 7408870), (14, 5821255), (22, 3704435), (35, 2328502), (53, 1537690), (55, 1481774), (70, 1164251), (77, 1058410), (106, 768845), (110, 740887), (154, 529205), (265, 307538), (371, 219670), (385, 211682), (530, 153769), (583, 139790), (742, 109835), (770, 105841), (1166, 69895), (1855, 43934), (1997, 40810), (2915, 27958), (3710, 21967), (3994, 20405), (4081, 19970), (5830, 13979), (8162, 9985)]