128485679

素因数分解:

$7^1\times {\mathrm{79}}^1\times {\mathrm{283}}^1\times {\mathrm{821}}^1$

素因数の和:1190

約数の個数: 16

約数和(自身を含む): 149406720

約数和(自身を除く): 20921041

約数列:

[1, 7, 79, 283, 553, 821, 1981, 5747, 22357, 64859, 156499, 232343, 454013, 1626401, 18355097, 128485679]

約数ペア:

[(1, 128485679), (7, 18355097), (79, 1626401), (283, 454013), (553, 232343), (821, 156499), (1981, 64859), (5747, 22357)]