21311740

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{5953}}^1$

素因数の和:6141

約数の個数: 24

約数和(自身を含む): 45012240

約数和(自身を除く): 23700500

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 5953, 11906, 23812, 29765, 59530, 119060, 1065587, 2131174, 4262348, 5327935, 10655870, 21311740]

約数ペア:

[(1, 21311740), (2, 10655870), (4, 5327935), (5, 4262348), (10, 2131174), (20, 1065587), (179, 119060), (358, 59530), (716, 29765), (895, 23812), (1790, 11906), (3580, 5953)]