19998370

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{40813}}^1$

素因数の和:40834

約数の個数: 24

約数和(自身を含む): 41875164

約数和(自身を除く): 21876794

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 40813, 81626, 204065, 285691, 408130, 571382, 1428455, 1999837, 2856910, 3999674, 9999185, 19998370]

約数ペア:

[(1, 19998370), (2, 9999185), (5, 3999674), (7, 2856910), (10, 1999837), (14, 1428455), (35, 571382), (49, 408130), (70, 285691), (98, 204065), (245, 81626), (490, 40813)]