18880964

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{223}}^1\times {\mathrm{347}}^1$

素因数の和:635

約数の個数: 24

約数和(自身を含む): 33831168

約数和(自身を除く): 14950204

約数列:

[1, 2, 4, 61, 122, 223, 244, 347, 446, 694, 892, 1388, 13603, 21167, 27206, 42334, 54412, 77381, 84668, 154762, 309524, 4720241, 9440482, 18880964]

約数ペア:

[(1, 18880964), (2, 9440482), (4, 4720241), (61, 309524), (122, 154762), (223, 84668), (244, 77381), (347, 54412), (446, 42334), (694, 27206), (892, 21167), (1388, 13603)]