20166485000

素因数分解:

$2^3\times 5^4\times {\mathrm{71}}^1\times {\mathrm{56807}}^1$

素因数の和:56904

約数の個数: 80

約数和(自身を含む): 47916411840

約数和(自身を除く): 27749926840

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 71, 100, 125, 142, 200, 250, 284, 355, 500, 568, 625, 710, 1000, 1250, 1420, 1775, 2500, 2840, 3550, 5000, 7100, 8875, 14200, 17750, 35500, 44375, 56807, 71000, 88750, 113614, 177500, 227228, 284035, 355000, 454456, 568070, 1136140, 1420175, 2272280, 2840350, 4033297, 5680700, 7100875, 8066594, 11361400, 14201750, 16133188, 20166485, 28403500, 32266376, 35504375, 40332970, 56807000, 71008750, 80665940, 100832425, 142017500, 161331880, 201664850, 284035000, 403329700, 504162125, 806659400, 1008324250, 2016648500, 2520810625, 4033297000, 5041621250, 10083242500, 20166485000]

約数ペア:

[(1, 20166485000), (2, 10083242500), (4, 5041621250), (5, 4033297000), (8, 2520810625), (10, 2016648500), (20, 1008324250), (25, 806659400), (40, 504162125), (50, 403329700), (71, 284035000), (100, 201664850), (125, 161331880), (142, 142017500), (200, 100832425), (250, 80665940), (284, 71008750), (355, 56807000), (500, 40332970), (568, 35504375), (625, 32266376), (710, 28403500), (1000, 20166485), (1250, 16133188), (1420, 14201750), (1775, 11361400), (2500, 8066594), (2840, 7100875), (3550, 5680700), (5000, 4033297), (7100, 2840350), (8875, 2272280), (14200, 1420175), (17750, 1136140), (35500, 568070), (44375, 454456), (56807, 355000), (71000, 284035), (88750, 227228), (113614, 177500)]