21282872

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{1811}}^1$

素因数の和:1943

約数の個数: 32

約数和(自身を含む): 43379280

約数和(自身を除く): 22096408

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 113, 226, 452, 904, 1469, 1811, 2938, 3622, 5876, 7244, 11752, 14488, 23543, 47086, 94172, 188344, 204643, 409286, 818572, 1637144, 2660359, 5320718, 10641436, 21282872]

約数ペア:

[(1, 21282872), (2, 10641436), (4, 5320718), (8, 2660359), (13, 1637144), (26, 818572), (52, 409286), (104, 204643), (113, 188344), (226, 94172), (452, 47086), (904, 23543), (1469, 14488), (1811, 11752), (2938, 7244), (3622, 5876)]