20126990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{154823}}^1$

素因数の和:154843

約数の個数: 16

約数和(自身を含む): 39015648

約数和(自身を除く): 18888658

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 154823, 309646, 774115, 1548230, 2012699, 4025398, 10063495, 20126990]

約数ペア:

[(1, 20126990), (2, 10063495), (5, 4025398), (10, 2012699), (13, 1548230), (26, 774115), (65, 309646), (130, 154823)]