20044420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{509}}^1$

素因数の和:708

約数の個数: 48

約数和(自身を含む): 46267200

約数和(自身を除く): 26222780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 179, 220, 358, 509, 716, 895, 1018, 1790, 1969, 2036, 2545, 3580, 3938, 5090, 5599, 7876, 9845, 10180, 11198, 19690, 22396, 27995, 39380, 55990, 91111, 111980, 182222, 364444, 455555, 911110, 1002221, 1822220, 2004442, 4008884, 5011105, 10022210, 20044420]

約数ペア:

[(1, 20044420), (2, 10022210), (4, 5011105), (5, 4008884), (10, 2004442), (11, 1822220), (20, 1002221), (22, 911110), (44, 455555), (55, 364444), (110, 182222), (179, 111980), (220, 91111), (358, 55990), (509, 39380), (716, 27995), (895, 22396), (1018, 19690), (1790, 11198), (1969, 10180), (2036, 9845), (2545, 7876), (3580, 5599), (3938, 5090)]