21616816

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1009}}^1$

素因数の和:1133

約数の個数: 40

約数和(自身を含む): 45587360

約数和(自身を除く): 23970544

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 103, 104, 206, 208, 412, 824, 1009, 1339, 1648, 2018, 2678, 4036, 5356, 8072, 10712, 13117, 16144, 21424, 26234, 52468, 103927, 104936, 207854, 209872, 415708, 831416, 1351051, 1662832, 2702102, 5404204, 10808408, 21616816]

約数ペア:

[(1, 21616816), (2, 10808408), (4, 5404204), (8, 2702102), (13, 1662832), (16, 1351051), (26, 831416), (52, 415708), (103, 209872), (104, 207854), (206, 104936), (208, 103927), (412, 52468), (824, 26234), (1009, 21424), (1339, 16144), (1648, 13117), (2018, 10712), (2678, 8072), (4036, 5356)]