220139905

素因数分解:

$5^1\times {\mathrm{157}}^1\times {\mathrm{173}}^1\times {\mathrm{1621}}^1$

素因数の和:1956

約数の個数: 16

約数和(自身を含む): 267552144

約数和(自身を除く): 47412239

約数列:

[1, 5, 157, 173, 785, 865, 1621, 8105, 27161, 135805, 254497, 280433, 1272485, 1402165, 44027981, 220139905]

約数ペア:

[(1, 220139905), (5, 44027981), (157, 1402165), (173, 1272485), (785, 280433), (865, 254497), (1621, 135805), (8105, 27161)]