207978875

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{977}}^1$

素因数の和:1136

約数の個数: 32

約数和(自身を含む): 281945664

約数和(自身を除く): 73966789

約数列:

[1, 5, 13, 25, 65, 125, 131, 325, 655, 977, 1625, 1703, 3275, 4885, 8515, 12701, 16375, 24425, 42575, 63505, 122125, 127987, 212875, 317525, 639935, 1587625, 1663831, 3199675, 8319155, 15998375, 41595775, 207978875]

約数ペア:

[(1, 207978875), (5, 41595775), (13, 15998375), (25, 8319155), (65, 3199675), (125, 1663831), (131, 1587625), (325, 639935), (655, 317525), (977, 212875), (1625, 127987), (1703, 122125), (3275, 63505), (4885, 42575), (8515, 24425), (12701, 16375)]