18380385

素因数分解:

$3^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{787}}^1$

素因数の和:974

約数の個数: 32

約数和(自身を含む): 32906880

約数和(自身を除く): 14526495

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 173, 519, 787, 865, 1557, 2361, 2595, 3935, 4671, 7083, 7785, 11805, 21249, 23355, 35415, 106245, 136151, 408453, 680755, 1225359, 2042265, 3676077, 6126795, 18380385]

約数ペア:

[(1, 18380385), (3, 6126795), (5, 3676077), (9, 2042265), (15, 1225359), (27, 680755), (45, 408453), (135, 136151), (173, 106245), (519, 35415), (787, 23355), (865, 21249), (1557, 11805), (2361, 7785), (2595, 7083), (3935, 4671)]