31278675

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{197}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 54505440

約数和(自身を除く): 23226765

約数列:

[1, 3, 5, 15, 25, 29, 73, 75, 87, 145, 197, 219, 365, 435, 591, 725, 985, 1095, 1825, 2117, 2175, 2955, 4925, 5475, 5713, 6351, 10585, 14381, 14775, 17139, 28565, 31755, 43143, 52925, 71905, 85695, 142825, 158775, 215715, 359525, 417049, 428475, 1078575, 1251147, 2085245, 6255735, 10426225, 31278675]

約数ペア:

[(1, 31278675), (3, 10426225), (5, 6255735), (15, 2085245), (25, 1251147), (29, 1078575), (73, 428475), (75, 417049), (87, 359525), (145, 215715), (197, 158775), (219, 142825), (365, 85695), (435, 71905), (591, 52925), (725, 43143), (985, 31755), (1095, 28565), (1825, 17139), (2117, 14775), (2175, 14381), (2955, 10585), (4925, 6351), (5475, 5713)]