66720913

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{2099}}^1$

素因数の和:2364

約数の個数: 16

約数和(自身を含む): 80640000

約数和(自身を除く): 13919087

約数列:

[1, 7, 19, 133, 239, 1673, 2099, 4541, 14693, 31787, 39881, 279167, 501661, 3511627, 9531559, 66720913]

約数ペア:

[(1, 66720913), (7, 9531559), (19, 3511627), (133, 501661), (239, 279167), (1673, 39881), (2099, 31787), (4541, 14693)]