20983761

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{113}}^1\times {\mathrm{439}}^1$

素因数の和:605

約数の個数: 24

約数和(自身を含む): 31299840

約数和(自身を除く): 10316079

約数列:

[1, 3, 9, 47, 113, 141, 339, 423, 439, 1017, 1317, 3951, 5311, 15933, 20633, 47799, 49607, 61899, 148821, 185697, 446463, 2331529, 6994587, 20983761]

約数ペア:

[(1, 20983761), (3, 6994587), (9, 2331529), (47, 446463), (113, 185697), (141, 148821), (339, 61899), (423, 49607), (439, 47799), (1017, 20633), (1317, 15933), (3951, 5311)]