17780495060

素因数分解:

$2^2\times 5^1\times {\mathrm{13721}}^1\times {\mathrm{64793}}^1$

素因数の和:78523

約数の個数: 24

約数和(自身を含む): 37342337256

約数和(自身を除く): 19561842196

約数列:

[1, 2, 4, 5, 10, 20, 13721, 27442, 54884, 64793, 68605, 129586, 137210, 259172, 274420, 323965, 647930, 1295860, 889024753, 1778049506, 3556099012, 4445123765, 8890247530, 17780495060]

約数ペア:

[(1, 17780495060), (2, 8890247530), (4, 4445123765), (5, 3556099012), (10, 1778049506), (20, 889024753), (13721, 1295860), (27442, 647930), (54884, 323965), (64793, 274420), (68605, 259172), (129586, 137210)]