258889375

素因数分解:

$5^4\times {\mathrm{41}}^1\times {\mathrm{10103}}^1$

素因数の和:10164

約数の個数: 20

約数和(自身を含む): 331431408

約数和(自身を除く): 72542033

約数列:

[1, 5, 25, 41, 125, 205, 625, 1025, 5125, 10103, 25625, 50515, 252575, 414223, 1262875, 2071115, 6314375, 10355575, 51777875, 258889375]

約数ペア:

[(1, 258889375), (5, 51777875), (25, 10355575), (41, 6314375), (125, 2071115), (205, 1262875), (625, 414223), (1025, 252575), (5125, 50515), (10103, 25625)]