20684763

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{43}}^2\times {\mathrm{113}}^1$

素因数の和:216

約数の個数: 36

約数和(自身を含む): 33665112

約数和(自身を除く): 12980349

約数列:

[1, 3, 9, 11, 33, 43, 99, 113, 129, 339, 387, 473, 1017, 1243, 1419, 1849, 3729, 4257, 4859, 5547, 11187, 14577, 16641, 20339, 43731, 53449, 61017, 160347, 183051, 208937, 481041, 626811, 1880433, 2298307, 6894921, 20684763]

約数ペア:

[(1, 20684763), (3, 6894921), (9, 2298307), (11, 1880433), (33, 626811), (43, 481041), (99, 208937), (113, 183051), (129, 160347), (339, 61017), (387, 53449), (473, 43731), (1017, 20339), (1243, 16641), (1419, 14577), (1849, 11187), (3729, 5547), (4257, 4859)]