18793450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{997}}^1$

素因数の和:1051

約数の個数: 48

約数和(自身を含む): 38981880

約数和(自身を除く): 20188430

約数列:

[1, 2, 5, 10, 13, 25, 26, 29, 50, 58, 65, 130, 145, 290, 325, 377, 650, 725, 754, 997, 1450, 1885, 1994, 3770, 4985, 9425, 9970, 12961, 18850, 24925, 25922, 28913, 49850, 57826, 64805, 129610, 144565, 289130, 324025, 375869, 648050, 722825, 751738, 1445650, 1879345, 3758690, 9396725, 18793450]

約数ペア:

[(1, 18793450), (2, 9396725), (5, 3758690), (10, 1879345), (13, 1445650), (25, 751738), (26, 722825), (29, 648050), (50, 375869), (58, 324025), (65, 289130), (130, 144565), (145, 129610), (290, 64805), (325, 57826), (377, 49850), (650, 28913), (725, 25922), (754, 24925), (997, 18850), (1450, 12961), (1885, 9970), (1994, 9425), (3770, 4985)]