668826860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{82981}}^1$

素因数の和:83034

約数の個数: 48

約数和(自身を含む): 1561389312

約数和(自身を除く): 892562452

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 82981, 165962, 331924, 414905, 829810, 1078753, 1659620, 2157506, 2572411, 4315012, 5144822, 5393765, 10289644, 10787530, 12862055, 21575060, 25724110, 33441343, 51448220, 66882686, 133765372, 167206715, 334413430, 668826860]

約数ペア:

[(1, 668826860), (2, 334413430), (4, 167206715), (5, 133765372), (10, 66882686), (13, 51448220), (20, 33441343), (26, 25724110), (31, 21575060), (52, 12862055), (62, 10787530), (65, 10289644), (124, 5393765), (130, 5144822), (155, 4315012), (260, 2572411), (310, 2157506), (403, 1659620), (620, 1078753), (806, 829810), (1612, 414905), (2015, 331924), (4030, 165962), (8060, 82981)]