18968913

素因数分解:

$3^2\times {\mathrm{59}}^1\times {\mathrm{139}}^1\times {\mathrm{257}}^1$

素因数の和:461

約数の個数: 24

約数和(自身を含む): 28173600

約数和(自身を除く): 9204687

約数列:

[1, 3, 9, 59, 139, 177, 257, 417, 531, 771, 1251, 2313, 8201, 15163, 24603, 35723, 45489, 73809, 107169, 136467, 321507, 2107657, 6322971, 18968913]

約数ペア:

[(1, 18968913), (3, 6322971), (9, 2107657), (59, 321507), (139, 136467), (177, 107169), (257, 73809), (417, 45489), (531, 35723), (771, 24603), (1251, 15163), (2313, 8201)]