21185978

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1531}}^1$

素因数の和:1598

約数の個数: 32

約数和(自身を含む): 37723968

約数和(自身を除く): 16537990

約数列:

[1, 2, 11, 17, 22, 34, 37, 74, 187, 374, 407, 629, 814, 1258, 1531, 3062, 6919, 13838, 16841, 26027, 33682, 52054, 56647, 113294, 286297, 572594, 623117, 962999, 1246234, 1925998, 10592989, 21185978]

約数ペア:

[(1, 21185978), (2, 10592989), (11, 1925998), (17, 1246234), (22, 962999), (34, 623117), (37, 572594), (74, 286297), (187, 113294), (374, 56647), (407, 52054), (629, 33682), (814, 26027), (1258, 16841), (1531, 13838), (3062, 6919)]