240331

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1$

素因数の和:178

約数の個数: 16

約数和(自身を含む): 313600

約数和(自身を除く): 73269

約数列:

[1, 7, 13, 19, 91, 133, 139, 247, 973, 1729, 1807, 2641, 12649, 18487, 34333, 240331]

約数ペア:

[(1, 240331), (7, 34333), (13, 18487), (19, 12649), (91, 2641), (133, 1807), (139, 1729), (247, 973)]