19810310

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{1571}}^1$

素因数の和:1688

約数の個数: 32

約数和(自身を含む): 38822112

約数和(自身を除く): 19011802

約数列:

[1, 2, 5, 10, 13, 26, 65, 97, 130, 194, 485, 970, 1261, 1571, 2522, 3142, 6305, 7855, 12610, 15710, 20423, 40846, 102115, 152387, 204230, 304774, 761935, 1523870, 1981031, 3962062, 9905155, 19810310]

約数ペア:

[(1, 19810310), (2, 9905155), (5, 3962062), (10, 1981031), (13, 1523870), (26, 761935), (65, 304774), (97, 204230), (130, 152387), (194, 102115), (485, 40846), (970, 20423), (1261, 15710), (1571, 12610), (2522, 7855), (3142, 6305)]