20800868

素因数分解:

$2^2\times {\mathrm{11}}^3\times {\mathrm{3907}}^1$

素因数の和:3944

約数の個数: 24

約数和(自身を含む): 40049184

約数和(自身を除く): 19248316

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 1331, 2662, 3907, 5324, 7814, 15628, 42977, 85954, 171908, 472747, 945494, 1890988, 5200217, 10400434, 20800868]

約数ペア:

[(1, 20800868), (2, 10400434), (4, 5200217), (11, 1890988), (22, 945494), (44, 472747), (121, 171908), (242, 85954), (484, 42977), (1331, 15628), (2662, 7814), (3907, 5324)]