131012819

素因数分解:

$7^2\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{569}}^1$

素因数の和:747

約数の個数: 24

約数和(自身を含む): 158031360

約数和(自身を除く): 27018541

約数列:

[1, 7, 37, 49, 127, 259, 569, 889, 1813, 3983, 4699, 6223, 21053, 27881, 32893, 72263, 147371, 230251, 505841, 1031597, 2673731, 3540887, 18716117, 131012819]

約数ペア:

[(1, 131012819), (7, 18716117), (37, 3540887), (49, 2673731), (127, 1031597), (259, 505841), (569, 230251), (889, 147371), (1813, 72263), (3983, 32893), (4699, 27881), (6223, 21053)]