19637425

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1$

素因数の和:313

約数の個数: 24

約数和(自身を含む): 25216640

約数和(自身を除く): 5579215

約数列:

[1, 5, 25, 61, 79, 163, 305, 395, 815, 1525, 1975, 4075, 4819, 9943, 12877, 24095, 49715, 64385, 120475, 248575, 321925, 785497, 3927485, 19637425]

約数ペア:

[(1, 19637425), (5, 3927485), (25, 785497), (61, 321925), (79, 248575), (163, 120475), (305, 64385), (395, 49715), (815, 24095), (1525, 12877), (1975, 9943), (4075, 4819)]