21004456

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{6451}}^1$

素因数の和:6505

約数の個数: 32

約数和(自身を含む): 44131680

約数和(自身を除く): 23127224

約数列:

[1, 2, 4, 8, 11, 22, 37, 44, 74, 88, 148, 296, 407, 814, 1628, 3256, 6451, 12902, 25804, 51608, 70961, 141922, 238687, 283844, 477374, 567688, 954748, 1909496, 2625557, 5251114, 10502228, 21004456]

約数ペア:

[(1, 21004456), (2, 10502228), (4, 5251114), (8, 2625557), (11, 1909496), (22, 954748), (37, 567688), (44, 477374), (74, 283844), (88, 238687), (148, 141922), (296, 70961), (407, 51608), (814, 25804), (1628, 12902), (3256, 6451)]