38894375

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{4787}}^1$

素因数の和:4820

約数の個数: 20

約数和(自身を含む): 52351992

約数和(自身を除く): 13457617

約数列:

[1, 5, 13, 25, 65, 125, 325, 625, 1625, 4787, 8125, 23935, 62231, 119675, 311155, 598375, 1555775, 2991875, 7778875, 38894375]

約数ペア:

[(1, 38894375), (5, 7778875), (13, 2991875), (25, 1555775), (65, 598375), (125, 311155), (325, 119675), (625, 62231), (1625, 23935), (4787, 8125)]