20115615

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2399}}^1$

素因数の和:2463

約数の個数: 32

約数和(自身を含む): 35481600

約数和(自身を除く): 15365985

約数列:

[1, 3, 5, 13, 15, 39, 43, 65, 129, 195, 215, 559, 645, 1677, 2399, 2795, 7197, 8385, 11995, 31187, 35985, 93561, 103157, 155935, 309471, 467805, 515785, 1341041, 1547355, 4023123, 6705205, 20115615]

約数ペア:

[(1, 20115615), (3, 6705205), (5, 4023123), (13, 1547355), (15, 1341041), (39, 515785), (43, 467805), (65, 309471), (129, 155935), (195, 103157), (215, 93561), (559, 35985), (645, 31187), (1677, 11995), (2399, 8385), (2795, 7197)]