128520225

素因数分解:

$3^2\times 5^2\times {\mathrm{571201}}^1$

素因数の和:571217

約数の個数: 18

約数和(自身を含む): 230194406

約数和(自身を除く): 101674181

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 571201, 1713603, 2856005, 5140809, 8568015, 14280025, 25704045, 42840075, 128520225]

約数ペア:

[(1, 128520225), (3, 42840075), (5, 25704045), (9, 14280025), (15, 8568015), (25, 5140809), (45, 2856005), (75, 1713603), (225, 571201)]