21367490

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73681}}^1$

素因数の和:73717

約数の個数: 16

約数和(自身を含む): 39788280

約数和(自身を除く): 18420790

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 73681, 147362, 368405, 736810, 2136749, 4273498, 10683745, 21367490]

約数ペア:

[(1, 21367490), (2, 10683745), (5, 4273498), (10, 2136749), (29, 736810), (58, 368405), (145, 147362), (290, 73681)]