640891335275

素因数分解:

$5^2\times {\mathrm{71}}^1\times {\mathrm{12611}}^1\times {\mathrm{28631}}^1$

素因数の和:41323

約数の個数: 24

約数和(自身を含む): 805990341888

約数和(自身を除く): 165099006613

約数列:

[1, 5, 25, 71, 355, 1775, 12611, 28631, 63055, 143155, 315275, 715775, 895381, 2032801, 4476905, 10164005, 22384525, 50820025, 361065541, 1805327705, 9026638525, 25635653411, 128178267055, 640891335275]

約数ペア:

[(1, 640891335275), (5, 128178267055), (25, 25635653411), (71, 9026638525), (355, 1805327705), (1775, 361065541), (12611, 50820025), (28631, 22384525), (63055, 10164005), (143155, 4476905), (315275, 2032801), (715775, 895381)]