308400625

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{37957}}^1$

素因数の和:37990

約数の個数: 20

約数和(自身を含む): 415032772

約数和(自身を除く): 106632147

約数列:

[1, 5, 13, 25, 65, 125, 325, 625, 1625, 8125, 37957, 189785, 493441, 948925, 2467205, 4744625, 12336025, 23723125, 61680125, 308400625]

約数ペア:

[(1, 308400625), (5, 61680125), (13, 23723125), (25, 12336025), (65, 4744625), (125, 2467205), (325, 948925), (625, 493441), (1625, 189785), (8125, 37957)]