255383125

素因数分解:

$5^4\times {\mathrm{317}}^1\times {\mathrm{1289}}^1$

素因数の和:1626

約数の個数: 20

約数和(自身を含む): 320381820

約数和(自身を除く): 64998695

約数列:

[1, 5, 25, 125, 317, 625, 1289, 1585, 6445, 7925, 32225, 39625, 161125, 198125, 408613, 805625, 2043065, 10215325, 51076625, 255383125]

約数ペア:

[(1, 255383125), (5, 51076625), (25, 10215325), (125, 2043065), (317, 805625), (625, 408613), (1289, 198125), (1585, 161125), (6445, 39625), (7925, 32225)]