18748444

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{449}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 39160800

約数和(自身を除く): 20412356

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 73, 143, 146, 286, 292, 449, 572, 803, 898, 949, 1606, 1796, 1898, 3212, 3796, 4939, 5837, 9878, 10439, 11674, 19756, 20878, 23348, 32777, 41756, 64207, 65554, 128414, 131108, 256828, 360547, 426101, 721094, 852202, 1442188, 1704404, 4687111, 9374222, 18748444]

約数ペア:

[(1, 18748444), (2, 9374222), (4, 4687111), (11, 1704404), (13, 1442188), (22, 852202), (26, 721094), (44, 426101), (52, 360547), (73, 256828), (143, 131108), (146, 128414), (286, 65554), (292, 64207), (449, 41756), (572, 32777), (803, 23348), (898, 20878), (949, 19756), (1606, 11674), (1796, 10439), (1898, 9878), (3212, 5837), (3796, 4939)]