642674960

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{113147}}^1$

素因数の和:113231

約数の個数: 40

約数和(自身を含む): 1515278016

約数和(自身を除く): 872603056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 113147, 226294, 452588, 565735, 905176, 1131470, 1810352, 2262940, 4525880, 8033437, 9051760, 16066874, 32133748, 40167185, 64267496, 80334370, 128534992, 160668740, 321337480, 642674960]

約数ペア:

[(1, 642674960), (2, 321337480), (4, 160668740), (5, 128534992), (8, 80334370), (10, 64267496), (16, 40167185), (20, 32133748), (40, 16066874), (71, 9051760), (80, 8033437), (142, 4525880), (284, 2262940), (355, 1810352), (568, 1131470), (710, 905176), (1136, 565735), (1420, 452588), (2840, 226294), (5680, 113147)]