21978675

素因数分解:

$3^3\times 5^2\times {\mathrm{32561}}^1$

素因数の和:32580

約数の個数: 24

約数和(自身を含む): 40376880

約数和(自身を除く): 18398205

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 225, 675, 32561, 97683, 162805, 293049, 488415, 814025, 879147, 1465245, 2442075, 4395735, 7326225, 21978675]

約数ペア:

[(1, 21978675), (3, 7326225), (5, 4395735), (9, 2442075), (15, 1465245), (25, 879147), (27, 814025), (45, 488415), (75, 293049), (135, 162805), (225, 97683), (675, 32561)]