20484125

素因数分解:

$5^3\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:198

約数の個数: 32

約数和(自身を含む): 27126528

約数和(自身を除く): 6642403

約数列:

[1, 5, 25, 37, 43, 103, 125, 185, 215, 515, 925, 1075, 1591, 2575, 3811, 4429, 4625, 5375, 7955, 12875, 19055, 22145, 39775, 95275, 110725, 163873, 198875, 476375, 553625, 819365, 4096825, 20484125]

約数ペア:

[(1, 20484125), (5, 4096825), (25, 819365), (37, 553625), (43, 476375), (103, 198875), (125, 163873), (185, 110725), (215, 95275), (515, 39775), (925, 22145), (1075, 19055), (1591, 12875), (2575, 7955), (3811, 5375), (4429, 4625)]