20440695

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^2\times {\mathrm{67}}^1$

素因数の和:172

約数の個数: 48

約数和(自身を含む): 37072512

約数和(自身を除く): 16631817

約数列:

[1, 3, 5, 11, 15, 33, 43, 55, 67, 129, 165, 201, 215, 335, 473, 645, 737, 1005, 1419, 1849, 2211, 2365, 2881, 3685, 5547, 7095, 8643, 9245, 11055, 14405, 20339, 27735, 31691, 43215, 61017, 95073, 101695, 123883, 158455, 305085, 371649, 475365, 619415, 1362713, 1858245, 4088139, 6813565, 20440695]

約数ペア:

[(1, 20440695), (3, 6813565), (5, 4088139), (11, 1858245), (15, 1362713), (33, 619415), (43, 475365), (55, 371649), (67, 305085), (129, 158455), (165, 123883), (201, 101695), (215, 95073), (335, 61017), (473, 43215), (645, 31691), (737, 27735), (1005, 20339), (1419, 14405), (1849, 11055), (2211, 9245), (2365, 8643), (2881, 7095), (3685, 5547)]