18720370

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{64553}}^1$

素因数の和:64589

約数の個数: 16

約数和(自身を含む): 34859160

約数和(自身を除く): 16138790

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 64553, 129106, 322765, 645530, 1872037, 3744074, 9360185, 18720370]

約数ペア:

[(1, 18720370), (2, 9360185), (5, 3744074), (10, 1872037), (29, 645530), (58, 322765), (145, 129106), (290, 64553)]