20506156

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{881}}^1$

素因数の和:942

約数の個数: 36

約数和(自身を含む): 40970664

約数和(自身を除く): 20464508

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 92, 253, 506, 529, 881, 1012, 1058, 1762, 2116, 3524, 5819, 9691, 11638, 19382, 20263, 23276, 38764, 40526, 81052, 222893, 445786, 466049, 891572, 932098, 1864196, 5126539, 10253078, 20506156]

約数ペア:

[(1, 20506156), (2, 10253078), (4, 5126539), (11, 1864196), (22, 932098), (23, 891572), (44, 466049), (46, 445786), (92, 222893), (253, 81052), (506, 40526), (529, 38764), (881, 23276), (1012, 20263), (1058, 19382), (1762, 11638), (2116, 9691), (3524, 5819)]