20741625

素因数分解:

$3^2\times 5^3\times {\mathrm{103}}^1\times {\mathrm{179}}^1$

素因数の和:303

約数の個数: 48

約数和(自身を含む): 37964160

約数和(自身を除く): 17222535

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 103, 125, 179, 225, 309, 375, 515, 537, 895, 927, 1125, 1545, 1611, 2575, 2685, 4475, 4635, 7725, 8055, 12875, 13425, 18437, 22375, 23175, 38625, 40275, 55311, 67125, 92185, 115875, 165933, 201375, 276555, 460925, 829665, 1382775, 2304625, 4148325, 6913875, 20741625]

約数ペア:

[(1, 20741625), (3, 6913875), (5, 4148325), (9, 2304625), (15, 1382775), (25, 829665), (45, 460925), (75, 276555), (103, 201375), (125, 165933), (179, 115875), (225, 92185), (309, 67125), (375, 55311), (515, 40275), (537, 38625), (895, 23175), (927, 22375), (1125, 18437), (1545, 13425), (1611, 12875), (2575, 8055), (2685, 7725), (4475, 4635)]