805148980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{981889}}^1$

素因数の和:981939

約数の個数: 24

約数和(自身を含む): 1732053960

約数和(自身を除く): 926904980

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 981889, 1963778, 3927556, 4909445, 9818890, 19637780, 40257449, 80514898, 161029796, 201287245, 402574490, 805148980]

約数ペア:

[(1, 805148980), (2, 402574490), (4, 201287245), (5, 161029796), (10, 80514898), (20, 40257449), (41, 19637780), (82, 9818890), (164, 4909445), (205, 3927556), (410, 1963778), (820, 981889)]