18187715

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{563}}^1$

素因数の和:659

約数の個数: 32

約数和(自身を含む): 27288576

約数和(自身を除く): 9100861

約数列:

[1, 5, 7, 13, 35, 65, 71, 91, 355, 455, 497, 563, 923, 2485, 2815, 3941, 4615, 6461, 7319, 19705, 32305, 36595, 39973, 51233, 199865, 256165, 279811, 519649, 1399055, 2598245, 3637543, 18187715]

約数ペア:

[(1, 18187715), (5, 3637543), (7, 2598245), (13, 1399055), (35, 519649), (65, 279811), (71, 256165), (91, 199865), (355, 51233), (455, 39973), (497, 36595), (563, 32305), (923, 19705), (2485, 7319), (2815, 6461), (3941, 4615)]