21053980

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{5881}}^1$

素因数の和:6069

約数の個数: 24

約数和(自身を含む): 44467920

約数和(自身を除く): 23413940

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 5881, 11762, 23524, 29405, 58810, 117620, 1052699, 2105398, 4210796, 5263495, 10526990, 21053980]

約数ペア:

[(1, 21053980), (2, 10526990), (4, 5263495), (5, 4210796), (10, 2105398), (20, 1052699), (179, 117620), (358, 58810), (716, 29405), (895, 23524), (1790, 11762), (3580, 5881)]