81279045

素因数分解:

$3^4\times 5^1\times {\mathrm{200689}}^1$

素因数の和:200706

約数の個数: 20

約数和(自身を含む): 145700940

約数和(自身を除く): 64421895

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 200689, 602067, 1003445, 1806201, 3010335, 5418603, 9031005, 16255809, 27093015, 81279045]

約数ペア:

[(1, 81279045), (3, 27093015), (5, 16255809), (9, 9031005), (15, 5418603), (27, 3010335), (45, 1806201), (81, 1003445), (135, 602067), (405, 200689)]