21871388

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71011}}^1$

素因数の和:71033

約数の個数: 24

約数和(自身を含む): 47720064

約数和(自身を除く): 25848676

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 71011, 142022, 284044, 497077, 781121, 994154, 1562242, 1988308, 3124484, 5467847, 10935694, 21871388]

約数ペア:

[(1, 21871388), (2, 10935694), (4, 5467847), (7, 3124484), (11, 1988308), (14, 1562242), (22, 994154), (28, 781121), (44, 497077), (77, 284044), (154, 142022), (308, 71011)]