256607390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1973903}}^1$

素因数の和:1973923

約数の個数: 16

約数和(自身を含む): 497423808

約数和(自身を除く): 240816418

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 1973903, 3947806, 9869515, 19739030, 25660739, 51321478, 128303695, 256607390]

約数ペア:

[(1, 256607390), (2, 128303695), (5, 51321478), (10, 25660739), (13, 19739030), (26, 9869515), (65, 3947806), (130, 1973903)]