20684008

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{3319}}^1$

素因数の和:3385

約数の個数: 32

約数和(自身を含む): 41832000

約数和(自身を除く): 21147992

約数列:

[1, 2, 4, 8, 19, 38, 41, 76, 82, 152, 164, 328, 779, 1558, 3116, 3319, 6232, 6638, 13276, 26552, 63061, 126122, 136079, 252244, 272158, 504488, 544316, 1088632, 2585501, 5171002, 10342004, 20684008]

約数ペア:

[(1, 20684008), (2, 10342004), (4, 5171002), (8, 2585501), (19, 1088632), (38, 544316), (41, 504488), (76, 272158), (82, 252244), (152, 136079), (164, 126122), (328, 63061), (779, 26552), (1558, 13276), (3116, 6638), (3319, 6232)]