205670220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{489691}}^1$

素因数の和:489710

約数の個数: 48

約数和(自身を含む): 658146048

約数和(自身を除く): 452475828

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 489691, 979382, 1469073, 1958764, 2448455, 2938146, 3427837, 4896910, 5876292, 6855674, 7345365, 9793820, 10283511, 13711348, 14690730, 17139185, 20567022, 29381460, 34278370, 41134044, 51417555, 68556740, 102835110, 205670220]

約数ペア:

[(1, 205670220), (2, 102835110), (3, 68556740), (4, 51417555), (5, 41134044), (6, 34278370), (7, 29381460), (10, 20567022), (12, 17139185), (14, 14690730), (15, 13711348), (20, 10283511), (21, 9793820), (28, 7345365), (30, 6855674), (35, 5876292), (42, 4896910), (60, 3427837), (70, 2938146), (84, 2448455), (105, 1958764), (140, 1469073), (210, 979382), (420, 489691)]