28408125

素因数分解:

$3^1\times 5^4\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:271

約数の個数: 40

約数和(自身を含む): 48109600

約数和(自身を除く): 19701475

約数列:

[1, 3, 5, 15, 25, 75, 109, 125, 139, 327, 375, 417, 545, 625, 695, 1635, 1875, 2085, 2725, 3475, 8175, 10425, 13625, 15151, 17375, 40875, 45453, 52125, 68125, 75755, 86875, 204375, 227265, 260625, 378775, 1136325, 1893875, 5681625, 9469375, 28408125]

約数ペア:

[(1, 28408125), (3, 9469375), (5, 5681625), (15, 1893875), (25, 1136325), (75, 378775), (109, 260625), (125, 227265), (139, 204375), (327, 86875), (375, 75755), (417, 68125), (545, 52125), (625, 45453), (695, 40875), (1635, 17375), (1875, 15151), (2085, 13625), (2725, 10425), (3475, 8175)]