661005

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{397}}^1$

素因数の和:445

約数の個数: 24

約数和(自身を含む): 1179672

約数和(自身を除く): 518667

約数列:

[1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 397, 555, 1191, 1665, 1985, 3573, 5955, 14689, 17865, 44067, 73445, 132201, 220335, 661005]

約数ペア:

[(1, 661005), (3, 220335), (5, 132201), (9, 73445), (15, 44067), (37, 17865), (45, 14689), (111, 5955), (185, 3573), (333, 1985), (397, 1665), (555, 1191)]