18817875

素因数分解:

$3^2\times 5^3\times {\mathrm{43}}^1\times {\mathrm{389}}^1$

素因数の和:453

約数の個数: 48

約数和(自身を含む): 34800480

約数和(自身を除く): 15982605

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 125, 129, 215, 225, 375, 387, 389, 645, 1075, 1125, 1167, 1935, 1945, 3225, 3501, 5375, 5835, 9675, 9725, 16125, 16727, 17505, 29175, 48375, 48625, 50181, 83635, 87525, 145875, 150543, 250905, 418175, 437625, 752715, 1254525, 2090875, 3763575, 6272625, 18817875]

約数ペア:

[(1, 18817875), (3, 6272625), (5, 3763575), (9, 2090875), (15, 1254525), (25, 752715), (43, 437625), (45, 418175), (75, 250905), (125, 150543), (129, 145875), (215, 87525), (225, 83635), (375, 50181), (387, 48625), (389, 48375), (645, 29175), (1075, 17505), (1125, 16727), (1167, 16125), (1935, 9725), (1945, 9675), (3225, 5835), (3501, 5375)]