20780472

素因数分解:

$2^3\times 3^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{409}}^1$

素因数の和:520

約数の個数: 64

約数和(自身を含む): 54612000

約数和(自身を除く): 33831528

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 29, 58, 73, 87, 116, 146, 174, 219, 232, 292, 348, 409, 438, 584, 696, 818, 876, 1227, 1636, 1752, 2117, 2454, 3272, 4234, 4908, 6351, 8468, 9816, 11861, 12702, 16936, 23722, 25404, 29857, 35583, 47444, 50808, 59714, 71166, 89571, 94888, 119428, 142332, 179142, 238856, 284664, 358284, 716568, 865853, 1731706, 2597559, 3463412, 5195118, 6926824, 10390236, 20780472]

約数ペア:

[(1, 20780472), (2, 10390236), (3, 6926824), (4, 5195118), (6, 3463412), (8, 2597559), (12, 1731706), (24, 865853), (29, 716568), (58, 358284), (73, 284664), (87, 238856), (116, 179142), (146, 142332), (174, 119428), (219, 94888), (232, 89571), (292, 71166), (348, 59714), (409, 50808), (438, 47444), (584, 35583), (696, 29857), (818, 25404), (876, 23722), (1227, 16936), (1636, 12702), (1752, 11861), (2117, 9816), (2454, 8468), (3272, 6351), (4234, 4908)]