8972020

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{499}}^1$

素因数の和:568

約数の個数: 48

約数和(自身を含む): 20160000

約数和(自身を除く): 11187980

約数列:

[1, 2, 4, 5, 10, 20, 29, 31, 58, 62, 116, 124, 145, 155, 290, 310, 499, 580, 620, 899, 998, 1798, 1996, 2495, 3596, 4495, 4990, 8990, 9980, 14471, 15469, 17980, 28942, 30938, 57884, 61876, 72355, 77345, 144710, 154690, 289420, 309380, 448601, 897202, 1794404, 2243005, 4486010, 8972020]

約数ペア:

[(1, 8972020), (2, 4486010), (4, 2243005), (5, 1794404), (10, 897202), (20, 448601), (29, 309380), (31, 289420), (58, 154690), (62, 144710), (116, 77345), (124, 72355), (145, 61876), (155, 57884), (290, 30938), (310, 28942), (499, 17980), (580, 15469), (620, 14471), (899, 9980), (998, 8990), (1798, 4990), (1996, 4495), (2495, 3596)]