21648548

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{241}}^1\times {\mathrm{1321}}^1$

素因数の和:1583

約数の個数: 24

約数和(自身を含む): 40310424

約数和(自身を除く): 18661876

約数列:

[1, 2, 4, 17, 34, 68, 241, 482, 964, 1321, 2642, 4097, 5284, 8194, 16388, 22457, 44914, 89828, 318361, 636722, 1273444, 5412137, 10824274, 21648548]

約数ペア:

[(1, 21648548), (2, 10824274), (4, 5412137), (17, 1273444), (34, 636722), (68, 318361), (241, 89828), (482, 44914), (964, 22457), (1321, 16388), (2642, 8194), (4097, 5284)]