20977208

素因数分解:

$2^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{12917}}^1$

素因数の和:12959

約数の個数: 32

約数和(自身を含む): 46504800

約数和(自身を除く): 25527592

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 56, 58, 116, 203, 232, 406, 812, 1624, 12917, 25834, 51668, 90419, 103336, 180838, 361676, 374593, 723352, 749186, 1498372, 2622151, 2996744, 5244302, 10488604, 20977208]

約数ペア:

[(1, 20977208), (2, 10488604), (4, 5244302), (7, 2996744), (8, 2622151), (14, 1498372), (28, 749186), (29, 723352), (56, 374593), (58, 361676), (116, 180838), (203, 103336), (232, 90419), (406, 51668), (812, 25834), (1624, 12917)]