20019775

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{941}}^1$

素因数の和:1011

約数の個数: 24

約数和(自身を含む): 26632224

約数和(自身を除く): 6612449

約数列:

[1, 5, 23, 25, 37, 115, 185, 575, 851, 925, 941, 4255, 4705, 21275, 21643, 23525, 34817, 108215, 174085, 541075, 800791, 870425, 4003955, 20019775]

約数ペア:

[(1, 20019775), (5, 4003955), (23, 870425), (25, 800791), (37, 541075), (115, 174085), (185, 108215), (575, 34817), (851, 23525), (925, 21643), (941, 21275), (4255, 4705)]