21781436

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{179}}^1\times {\mathrm{1049}}^1$

素因数の和:1261

約数の個数: 24

約数和(自身を含む): 39690000

約数和(自身を除く): 17908564

約数列:

[1, 2, 4, 29, 58, 116, 179, 358, 716, 1049, 2098, 4196, 5191, 10382, 20764, 30421, 60842, 121684, 187771, 375542, 751084, 5445359, 10890718, 21781436]

約数ペア:

[(1, 21781436), (2, 10890718), (4, 5445359), (29, 751084), (58, 375542), (116, 187771), (179, 121684), (358, 60842), (716, 30421), (1049, 20764), (2098, 10382), (4196, 5191)]