20236497800

素因数分解:

$2^3\times 5^2\times {\mathrm{79}}^1\times {\mathrm{1280791}}^1$

素因数の和:1280886

約数の個数: 48

約数和(自身を含む): 47645462400

約数和(自身を除く): 27408964600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 100, 158, 200, 316, 395, 632, 790, 1580, 1975, 3160, 3950, 7900, 15800, 1280791, 2561582, 5123164, 6403955, 10246328, 12807910, 25615820, 32019775, 51231640, 64039550, 101182489, 128079100, 202364978, 256158200, 404729956, 505912445, 809459912, 1011824890, 2023649780, 2529562225, 4047299560, 5059124450, 10118248900, 20236497800]

約数ペア:

[(1, 20236497800), (2, 10118248900), (4, 5059124450), (5, 4047299560), (8, 2529562225), (10, 2023649780), (20, 1011824890), (25, 809459912), (40, 505912445), (50, 404729956), (79, 256158200), (100, 202364978), (158, 128079100), (200, 101182489), (316, 64039550), (395, 51231640), (632, 32019775), (790, 25615820), (1580, 12807910), (1975, 10246328), (3160, 6403955), (3950, 5123164), (7900, 2561582), (15800, 1280791)]