20486125

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{317}}^1$

素因数の和:390

約数の個数: 32

約数和(自身を含む): 28574208

約数和(自身を除く): 8088083

約数列:

[1, 5, 11, 25, 47, 55, 125, 235, 275, 317, 517, 1175, 1375, 1585, 2585, 3487, 5875, 7925, 12925, 14899, 17435, 39625, 64625, 74495, 87175, 163889, 372475, 435875, 819445, 1862375, 4097225, 20486125]

約数ペア:

[(1, 20486125), (5, 4097225), (11, 1862375), (25, 819445), (47, 435875), (55, 372475), (125, 163889), (235, 87175), (275, 74495), (317, 64625), (517, 39625), (1175, 17435), (1375, 14899), (1585, 12925), (2585, 7925), (3487, 5875)]