21421865

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{941}}^1$

素因数の和:1132

約数の個数: 16

約数和(自身を含む): 26790480

約数和(自身を除く): 5368615

約数列:

[1, 5, 29, 145, 157, 785, 941, 4553, 4705, 22765, 27289, 136445, 147737, 738685, 4284373, 21421865]

約数ペア:

[(1, 21421865), (5, 4284373), (29, 738685), (145, 147737), (157, 136445), (785, 27289), (941, 22765), (4553, 4705)]