21179816

素因数分解:

$2^3\times 7^1\times {\mathrm{113}}^1\times {\mathrm{3347}}^1$

素因数の和:3473

約数の個数: 32

約数和(自身を含む): 45800640

約数和(自身を除く): 24620824

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 113, 226, 452, 791, 904, 1582, 3164, 3347, 6328, 6694, 13388, 23429, 26776, 46858, 93716, 187432, 378211, 756422, 1512844, 2647477, 3025688, 5294954, 10589908, 21179816]

約数ペア:

[(1, 21179816), (2, 10589908), (4, 5294954), (7, 3025688), (8, 2647477), (14, 1512844), (28, 756422), (56, 378211), (113, 187432), (226, 93716), (452, 46858), (791, 26776), (904, 23429), (1582, 13388), (3164, 6694), (3347, 6328)]