19985247

素因数分解:

$3^2\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{617}}^1$

素因数の和:743

約数の個数: 24

約数和(自身を含む): 29886480

約数和(自身を除く): 9901233

約数列:

[1, 3, 9, 59, 61, 177, 183, 531, 549, 617, 1851, 3599, 5553, 10797, 32391, 36403, 37637, 109209, 112911, 327627, 338733, 2220583, 6661749, 19985247]

約数ペア:

[(1, 19985247), (3, 6661749), (9, 2220583), (59, 338733), (61, 327627), (177, 112911), (183, 109209), (531, 37637), (549, 36403), (617, 32391), (1851, 10797), (3599, 5553)]