71820225

素因数分解:

$3^2\times 5^2\times {\mathrm{319201}}^1$

素因数の和:319217

約数の個数: 18

約数和(自身を含む): 128638406

約数和(自身を除く): 56818181

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 319201, 957603, 1596005, 2872809, 4788015, 7980025, 14364045, 23940075, 71820225]

約数ペア:

[(1, 71820225), (3, 23940075), (5, 14364045), (9, 7980025), (15, 4788015), (25, 2872809), (45, 1596005), (75, 957603), (225, 319201)]