20122749

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{3499}}^1$

素因数の和:3582

約数の個数: 20

約数和(自身を含む): 30492000

約数和(自身を除く): 10369251

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 3499, 5751, 10497, 31491, 94473, 248429, 283419, 745287, 2235861, 6707583, 20122749]

約数ペア:

[(1, 20122749), (3, 6707583), (9, 2235861), (27, 745287), (71, 283419), (81, 248429), (213, 94473), (639, 31491), (1917, 10497), (3499, 5751)]