21191630

素因数分解:

$2^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{13001}}^1$

素因数の和:13171

約数の個数: 16

約数和(自身を含む): 38381904

約数和(自身を除く): 17190274

約数列:

[1, 2, 5, 10, 163, 326, 815, 1630, 13001, 26002, 65005, 130010, 2119163, 4238326, 10595815, 21191630]

約数ペア:

[(1, 21191630), (2, 10595815), (5, 4238326), (10, 2119163), (163, 130010), (326, 65005), (815, 26002), (1630, 13001)]