28162840

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{6971}}^1$

素因数の和:7083

約数の個数: 32

約数和(自身を含む): 64002960

約数和(自身を除く): 35840120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 6971, 13942, 27884, 34855, 55768, 69710, 139420, 278840, 704071, 1408142, 2816284, 3520355, 5632568, 7040710, 14081420, 28162840]

約数ペア:

[(1, 28162840), (2, 14081420), (4, 7040710), (5, 5632568), (8, 3520355), (10, 2816284), (20, 1408142), (40, 704071), (101, 278840), (202, 139420), (404, 69710), (505, 55768), (808, 34855), (1010, 27884), (2020, 13942), (4040, 6971)]