20939165

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{5281}}^1$

素因数の和:5360

約数の個数: 16

約数和(自身を含む): 27508656

約数和(自身を除く): 6569491

約数列:

[1, 5, 13, 61, 65, 305, 793, 3965, 5281, 26405, 68653, 322141, 343265, 1610705, 4187833, 20939165]

約数ペア:

[(1, 20939165), (5, 4187833), (13, 1610705), (61, 343265), (65, 322141), (305, 68653), (793, 26405), (3965, 5281)]