31721739

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{19121}}^1$

素因数の和:19210

約数の個数: 16

約数和(自身を含む): 48952320

約数和(自身を除く): 17230581

約数列:

[1, 3, 7, 21, 79, 237, 553, 1659, 19121, 57363, 133847, 401541, 1510559, 4531677, 10573913, 31721739]

約数ペア:

[(1, 31721739), (3, 10573913), (7, 4531677), (21, 1510559), (79, 401541), (237, 133847), (553, 57363), (1659, 19121)]