1989455

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{241}}^1$

素因数の和:386

約数の個数: 16

約数和(自身を含む): 2601984

約数和(自身を除く): 612529

約数列:

[1, 5, 13, 65, 127, 241, 635, 1205, 1651, 3133, 8255, 15665, 30607, 153035, 397891, 1989455]

約数ペア:

[(1, 1989455), (5, 397891), (13, 153035), (65, 30607), (127, 15665), (241, 8255), (635, 3133), (1205, 1651)]