20618210

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{26099}}^1$

素因数の和:26185

約数の個数: 16

約数和(自身を含む): 37584000

約数和(自身を除く): 16965790

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 26099, 52198, 130495, 260990, 2061821, 4123642, 10309105, 20618210]

約数ペア:

[(1, 20618210), (2, 10309105), (5, 4123642), (10, 2061821), (79, 260990), (158, 130495), (395, 52198), (790, 26099)]