78001640

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{17257}}^1$

素因数の和:17381

約数の個数: 32

約数和(自身を含む): 177067080

約数和(自身を除く): 99065440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4520, 17257, 34514, 69028, 86285, 138056, 172570, 345140, 690280, 1950041, 3900082, 7800164, 9750205, 15600328, 19500410, 39000820, 78001640]

約数ペア:

[(1, 78001640), (2, 39000820), (4, 19500410), (5, 15600328), (8, 9750205), (10, 7800164), (20, 3900082), (40, 1950041), (113, 690280), (226, 345140), (452, 172570), (565, 138056), (904, 86285), (1130, 69028), (2260, 34514), (4520, 17257)]