1668615

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{199}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 2956800

約数和(自身を除く): 1288185

約数列:

[1, 3, 5, 13, 15, 39, 43, 65, 129, 195, 199, 215, 559, 597, 645, 995, 1677, 2587, 2795, 2985, 7761, 8385, 8557, 12935, 25671, 38805, 42785, 111241, 128355, 333723, 556205, 1668615]

約数ペア:

[(1, 1668615), (3, 556205), (5, 333723), (13, 128355), (15, 111241), (39, 42785), (43, 38805), (65, 25671), (129, 12935), (195, 8557), (199, 8385), (215, 7761), (559, 2985), (597, 2795), (645, 2587), (995, 1677)]