20112525

素因数分解:

$3^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{1259}}^1$

素因数の和:1346

約数の個数: 36

約数和(自身を含む): 36560160

約数和(自身を除く): 16447635

約数列:

[1, 3, 5, 9, 15, 25, 45, 71, 75, 213, 225, 355, 639, 1065, 1259, 1775, 3195, 3777, 5325, 6295, 11331, 15975, 18885, 31475, 56655, 89389, 94425, 268167, 283275, 446945, 804501, 1340835, 2234725, 4022505, 6704175, 20112525]

約数ペア:

[(1, 20112525), (3, 6704175), (5, 4022505), (9, 2234725), (15, 1340835), (25, 804501), (45, 446945), (71, 283275), (75, 268167), (213, 94425), (225, 89389), (355, 56655), (639, 31475), (1065, 18885), (1259, 15975), (1775, 11331), (3195, 6295), (3777, 5325)]