77868125

素因数分解:

$5^4\times {\mathrm{31}}^1\times {\mathrm{4019}}^1$

素因数の和:4070

約数の個数: 20

約数和(自身を含む): 100467840

約数和(自身を除く): 22599715

約数列:

[1, 5, 25, 31, 125, 155, 625, 775, 3875, 4019, 19375, 20095, 100475, 124589, 502375, 622945, 2511875, 3114725, 15573625, 77868125]

約数ペア:

[(1, 77868125), (5, 15573625), (25, 3114725), (31, 2511875), (125, 622945), (155, 502375), (625, 124589), (775, 100475), (3875, 20095), (4019, 19375)]