78720625

素因数分解:

$5^4\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:307

約数の個数: 40

約数和(自身を含む): 107965440

約数和(自身を除く): 29244815

約数列:

[1, 5, 17, 25, 31, 85, 125, 155, 239, 425, 527, 625, 775, 1195, 2125, 2635, 3875, 4063, 5975, 7409, 10625, 13175, 19375, 20315, 29875, 37045, 65875, 101575, 125953, 149375, 185225, 329375, 507875, 629765, 926125, 2539375, 3148825, 4630625, 15744125, 78720625]

約数ペア:

[(1, 78720625), (5, 15744125), (17, 4630625), (25, 3148825), (31, 2539375), (85, 926125), (125, 629765), (155, 507875), (239, 329375), (425, 185225), (527, 149375), (625, 125953), (775, 101575), (1195, 65875), (2125, 37045), (2635, 29875), (3875, 20315), (4063, 19375), (5975, 13175), (7409, 10625)]