21031612

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{439}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 44352000

約数和(自身を除く): 23320388

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 59, 116, 118, 203, 236, 406, 413, 439, 812, 826, 878, 1652, 1711, 1756, 3073, 3422, 6146, 6844, 11977, 12292, 12731, 23954, 25462, 25901, 47908, 50924, 51802, 89117, 103604, 178234, 181307, 356468, 362614, 725228, 751129, 1502258, 3004516, 5257903, 10515806, 21031612]

約数ペア:

[(1, 21031612), (2, 10515806), (4, 5257903), (7, 3004516), (14, 1502258), (28, 751129), (29, 725228), (58, 362614), (59, 356468), (116, 181307), (118, 178234), (203, 103604), (236, 89117), (406, 51802), (413, 50924), (439, 47908), (812, 25901), (826, 25462), (878, 23954), (1652, 12731), (1711, 12292), (1756, 11977), (3073, 6844), (3422, 6146)]