278317390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2140903}}^1$

素因数の和:2140923

約数の個数: 16

約数和(自身を含む): 539507808

約数和(自身を除く): 261190418

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 2140903, 4281806, 10704515, 21409030, 27831739, 55663478, 139158695, 278317390]

約数ペア:

[(1, 278317390), (2, 139158695), (5, 55663478), (10, 27831739), (13, 21409030), (26, 10704515), (65, 4281806), (130, 2140903)]