20546020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1531}}^1$

素因数の和:1612

約数の個数: 48

約数和(自身を含む): 47871936

約数和(自身を除く): 27325916

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 61, 110, 122, 220, 244, 305, 610, 671, 1220, 1342, 1531, 2684, 3062, 3355, 6124, 6710, 7655, 13420, 15310, 16841, 30620, 33682, 67364, 84205, 93391, 168410, 186782, 336820, 373564, 466955, 933910, 1027301, 1867820, 2054602, 4109204, 5136505, 10273010, 20546020]

約数ペア:

[(1, 20546020), (2, 10273010), (4, 5136505), (5, 4109204), (10, 2054602), (11, 1867820), (20, 1027301), (22, 933910), (44, 466955), (55, 373564), (61, 336820), (110, 186782), (122, 168410), (220, 93391), (244, 84205), (305, 67364), (610, 33682), (671, 30620), (1220, 16841), (1342, 15310), (1531, 13420), (2684, 7655), (3062, 6710), (3355, 6124)]