21971875

素因数分解:

$5^5\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:193

約数の個数: 24

約数和(自身を含む): 28123200

約数和(自身を除く): 6151325

約数列:

[1, 5, 25, 79, 89, 125, 395, 445, 625, 1975, 2225, 3125, 7031, 9875, 11125, 35155, 49375, 55625, 175775, 246875, 278125, 878875, 4394375, 21971875]

約数ペア:

[(1, 21971875), (5, 4394375), (25, 878875), (79, 278125), (89, 246875), (125, 175775), (395, 55625), (445, 49375), (625, 35155), (1975, 11125), (2225, 9875), (3125, 7031)]