18128956

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{191}}^1\times {\mathrm{389}}^1$

素因数の和:645

約数の個数: 24

約数和(自身を含む): 32497920

約数和(自身を除く): 14368964

約数列:

[1, 2, 4, 61, 122, 191, 244, 382, 389, 764, 778, 1556, 11651, 23302, 23729, 46604, 47458, 74299, 94916, 148598, 297196, 4532239, 9064478, 18128956]

約数ペア:

[(1, 18128956), (2, 9064478), (4, 4532239), (61, 297196), (122, 148598), (191, 94916), (244, 74299), (382, 47458), (389, 46604), (764, 23729), (778, 23302), (1556, 11651)]