290220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{691}}^1$

素因数の和:710

約数の個数: 48

約数和(自身を含む): 930048

約数和(自身を除く): 639828

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, 691, 1382, 2073, 2764, 3455, 4146, 4837, 6910, 8292, 9674, 10365, 13820, 14511, 19348, 20730, 24185, 29022, 41460, 48370, 58044, 72555, 96740, 145110, 290220]

約数ペア:

[(1, 290220), (2, 145110), (3, 96740), (4, 72555), (5, 58044), (6, 48370), (7, 41460), (10, 29022), (12, 24185), (14, 20730), (15, 19348), (20, 14511), (21, 13820), (28, 10365), (30, 9674), (35, 8292), (42, 6910), (60, 4837), (70, 4146), (84, 3455), (105, 2764), (140, 2073), (210, 1382), (420, 691)]