20019956

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{7459}}^1$

素因数の和:7535

約数の個数: 24

約数和(自身を含む): 38851680

約数和(自身を除く): 18831724

約数列:

[1, 2, 4, 11, 22, 44, 61, 122, 244, 671, 1342, 2684, 7459, 14918, 29836, 82049, 164098, 328196, 454999, 909998, 1819996, 5004989, 10009978, 20019956]

約数ペア:

[(1, 20019956), (2, 10009978), (4, 5004989), (11, 1819996), (22, 909998), (44, 454999), (61, 328196), (122, 164098), (244, 82049), (671, 29836), (1342, 14918), (2684, 7459)]