2015357720

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{9721}}^1$

素因数の和:9876

約数の個数: 64

約数和(自身を含む): 4661893440

約数和(自身を除く): 2646535720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 73, 142, 146, 284, 292, 355, 365, 568, 584, 710, 730, 1420, 1460, 2840, 2920, 5183, 9721, 10366, 19442, 20732, 25915, 38884, 41464, 48605, 51830, 77768, 97210, 103660, 194420, 207320, 388840, 690191, 709633, 1380382, 1419266, 2760764, 2838532, 3450955, 3548165, 5521528, 5677064, 6901910, 7096330, 13803820, 14192660, 27607640, 28385320, 50383943, 100767886, 201535772, 251919715, 403071544, 503839430, 1007678860, 2015357720]

約数ペア:

[(1, 2015357720), (2, 1007678860), (4, 503839430), (5, 403071544), (8, 251919715), (10, 201535772), (20, 100767886), (40, 50383943), (71, 28385320), (73, 27607640), (142, 14192660), (146, 13803820), (284, 7096330), (292, 6901910), (355, 5677064), (365, 5521528), (568, 3548165), (584, 3450955), (710, 2838532), (730, 2760764), (1420, 1419266), (1460, 1380382), (2840, 709633), (2920, 690191), (5183, 388840), (9721, 207320), (10366, 194420), (19442, 103660), (20732, 97210), (25915, 77768), (38884, 51830), (41464, 48605)]