21198260

素因数分解:

$2^2\times 5^1\times {\mathrm{349}}^1\times {\mathrm{3037}}^1$

素因数の和:3395

約数の個数: 24

約数和(自身を含む): 44658600

約数和(自身を除く): 23460340

約数列:

[1, 2, 4, 5, 10, 20, 349, 698, 1396, 1745, 3037, 3490, 6074, 6980, 12148, 15185, 30370, 60740, 1059913, 2119826, 4239652, 5299565, 10599130, 21198260]

約数ペア:

[(1, 21198260), (2, 10599130), (4, 5299565), (5, 4239652), (10, 2119826), (20, 1059913), (349, 60740), (698, 30370), (1396, 15185), (1745, 12148), (3037, 6980), (3490, 6074)]