987130625

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{121493}}^1$

素因数の和:121526

約数の個数: 20

約数和(自身を含む): 1328415396

約数和(自身を除く): 341284771

約数列:

[1, 5, 13, 25, 65, 125, 325, 625, 1625, 8125, 121493, 607465, 1579409, 3037325, 7897045, 15186625, 39485225, 75933125, 197426125, 987130625]

約数ペア:

[(1, 987130625), (5, 197426125), (13, 75933125), (25, 39485225), (65, 15186625), (125, 7897045), (325, 3037325), (625, 1579409), (1625, 607465), (8125, 121493)]