20815735

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{12889}}^1$

素因数の和:12930

約数の個数: 16

約数和(自身を含む): 27842400

約数和(自身を除く): 7026665

約数列:

[1, 5, 17, 19, 85, 95, 323, 1615, 12889, 64445, 219113, 244891, 1095565, 1224455, 4163147, 20815735]

約数ペア:

[(1, 20815735), (5, 4163147), (17, 1224455), (19, 1095565), (85, 244891), (95, 219113), (323, 64445), (1615, 12889)]