218216875

素因数分解:

$5^4\times {\mathrm{89}}^1\times {\mathrm{3923}}^1$

素因数の和:4032

約数の個数: 20

約数和(自身を含む): 275817960

約数和(自身を除く): 57601085

約数列:

[1, 5, 25, 89, 125, 445, 625, 2225, 3923, 11125, 19615, 55625, 98075, 349147, 490375, 1745735, 2451875, 8728675, 43643375, 218216875]

約数ペア:

[(1, 218216875), (5, 43643375), (25, 8728675), (89, 2451875), (125, 1745735), (445, 490375), (625, 349147), (2225, 98075), (3923, 55625), (11125, 19615)]