20516824

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{587}}^1$

素因数の和:867

約数の個数: 32

約数和(自身を含む): 40960080

約数和(自身を除く): 20443256

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 257, 514, 587, 1028, 1174, 2056, 2348, 4369, 4696, 8738, 9979, 17476, 19958, 34952, 39916, 79832, 150859, 301718, 603436, 1206872, 2564603, 5129206, 10258412, 20516824]

約数ペア:

[(1, 20516824), (2, 10258412), (4, 5129206), (8, 2564603), (17, 1206872), (34, 603436), (68, 301718), (136, 150859), (257, 79832), (514, 39916), (587, 34952), (1028, 19958), (1174, 17476), (2056, 9979), (2348, 8738), (4369, 4696)]