21971155

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{1051}}^1$

素因数の和:1206

約数の個数: 16

約数和(自身を含む): 27343584

約数和(自身を除く): 5372429

約数列:

[1, 5, 37, 113, 185, 565, 1051, 4181, 5255, 20905, 38887, 118763, 194435, 593815, 4394231, 21971155]

約数ペア:

[(1, 21971155), (5, 4394231), (37, 593815), (113, 194435), (185, 118763), (565, 38887), (1051, 20905), (4181, 5255)]