72018225

素因数分解:

$3^2\times 5^2\times {\mathrm{320081}}^1$

素因数の和:320097

約数の個数: 18

約数和(自身を含む): 128993046

約数和(自身を除く): 56974821

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 320081, 960243, 1600405, 2880729, 4801215, 8002025, 14403645, 24006075, 72018225]

約数ペア:

[(1, 72018225), (3, 24006075), (5, 14403645), (9, 8002025), (15, 4801215), (25, 2880729), (45, 1600405), (75, 960243), (225, 320081)]