20415642

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{261739}}^1$

素因数の和:261757

約数の個数: 16

約数和(自身を含む): 43972320

約数和(自身を除く): 23556678

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 261739, 523478, 785217, 1570434, 3402607, 6805214, 10207821, 20415642]

約数ペア:

[(1, 20415642), (2, 10207821), (3, 6805214), (6, 3402607), (13, 1570434), (26, 785217), (39, 523478), (78, 261739)]