20805216380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{373}}^1\times {\mathrm{214531}}^1$

素因数の和:214926

約数の個数: 48

約数和(自身を含む): 47178161184

約数和(自身を除く): 26372944804

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 373, 746, 1492, 1865, 3730, 4849, 7460, 9698, 19396, 24245, 48490, 96980, 214531, 429062, 858124, 1072655, 2145310, 2788903, 4290620, 5577806, 11155612, 13944515, 27889030, 55778060, 80020063, 160040126, 320080252, 400100315, 800200630, 1040260819, 1600401260, 2080521638, 4161043276, 5201304095, 10402608190, 20805216380]

約数ペア:

[(1, 20805216380), (2, 10402608190), (4, 5201304095), (5, 4161043276), (10, 2080521638), (13, 1600401260), (20, 1040260819), (26, 800200630), (52, 400100315), (65, 320080252), (130, 160040126), (260, 80020063), (373, 55778060), (746, 27889030), (1492, 13944515), (1865, 11155612), (3730, 5577806), (4849, 4290620), (7460, 2788903), (9698, 2145310), (19396, 1072655), (24245, 858124), (48490, 429062), (96980, 214531)]