21217588

素因数分解:

$2^2\times 7^2\times {\mathrm{103}}^1\times {\mathrm{1051}}^1$

素因数の和:1172

約数の個数: 36

約数和(自身を含む): 43653792

約数和(自身を除く): 22436204

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 103, 196, 206, 412, 721, 1051, 1442, 2102, 2884, 4204, 5047, 7357, 10094, 14714, 20188, 29428, 51499, 102998, 108253, 205996, 216506, 433012, 757771, 1515542, 3031084, 5304397, 10608794, 21217588]

約数ペア:

[(1, 21217588), (2, 10608794), (4, 5304397), (7, 3031084), (14, 1515542), (28, 757771), (49, 433012), (98, 216506), (103, 205996), (196, 108253), (206, 102998), (412, 51499), (721, 29428), (1051, 20188), (1442, 14714), (2102, 10094), (2884, 7357), (4204, 5047)]