20512456900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{544097}}^1$

素因数の和:544153

約数の個数: 72

約数和(自身を含む): 49589091720

約数和(自身を除く): 29076634820

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 29, 50, 52, 58, 65, 100, 116, 130, 145, 260, 290, 325, 377, 580, 650, 725, 754, 1300, 1450, 1508, 1885, 2900, 3770, 7540, 9425, 18850, 37700, 544097, 1088194, 2176388, 2720485, 5440970, 7073261, 10881940, 13602425, 14146522, 15778813, 27204850, 28293044, 31557626, 35366305, 54409700, 63115252, 70732610, 78894065, 141465220, 157788130, 176831525, 205124569, 315576260, 353663050, 394470325, 410249138, 707326100, 788940650, 820498276, 1025622845, 1577881300, 2051245690, 4102491380, 5128114225, 10256228450, 20512456900]

約数ペア:

[(1, 20512456900), (2, 10256228450), (4, 5128114225), (5, 4102491380), (10, 2051245690), (13, 1577881300), (20, 1025622845), (25, 820498276), (26, 788940650), (29, 707326100), (50, 410249138), (52, 394470325), (58, 353663050), (65, 315576260), (100, 205124569), (116, 176831525), (130, 157788130), (145, 141465220), (260, 78894065), (290, 70732610), (325, 63115252), (377, 54409700), (580, 35366305), (650, 31557626), (725, 28293044), (754, 27204850), (1300, 15778813), (1450, 14146522), (1508, 13602425), (1885, 10881940), (2900, 7073261), (3770, 5440970), (7540, 2720485), (9425, 2176388), (18850, 1088194), (37700, 544097)]