217139783

素因数分解:

$7^1\times {\mathrm{113}}^1\times {\mathrm{223}}^1\times {\mathrm{1231}}^1$

素因数の和:1574

約数の個数: 16

約数和(自身を含む): 251682816

約数和(自身を除く): 34543033

約数列:

[1, 7, 113, 223, 791, 1231, 1561, 8617, 25199, 139103, 176393, 274513, 973721, 1921591, 31019969, 217139783]

約数ペア:

[(1, 217139783), (7, 31019969), (113, 1921591), (223, 973721), (791, 274513), (1231, 176393), (1561, 139103), (8617, 25199)]