21513028

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{2791}}^1$

素因数の和:2883

約数の個数: 24

約数和(自身を含む): 39400704

約数和(自身を除く): 17887676

約数列:

[1, 2, 4, 41, 47, 82, 94, 164, 188, 1927, 2791, 3854, 5582, 7708, 11164, 114431, 131177, 228862, 262354, 457724, 524708, 5378257, 10756514, 21513028]

約数ペア:

[(1, 21513028), (2, 10756514), (4, 5378257), (41, 524708), (47, 457724), (82, 262354), (94, 228862), (164, 131177), (188, 114431), (1927, 11164), (2791, 7708), (3854, 5582)]