20288877320

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1201}}^1\times {\mathrm{2591}}^1$

素因数の和:3966

約数の個数: 64

約数和(自身を含む): 45986019840

約数和(自身を除く): 25697142520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1201, 1304, 1630, 2402, 2591, 3260, 4804, 5182, 6005, 6520, 9608, 10364, 12010, 12955, 20728, 24020, 25910, 48040, 51820, 103640, 195763, 391526, 422333, 783052, 844666, 978815, 1566104, 1689332, 1957630, 2111665, 3111791, 3378664, 3915260, 4223330, 6223582, 7830520, 8446660, 12447164, 15558955, 16893320, 24894328, 31117910, 62235820, 124471640, 507221933, 1014443866, 2028887732, 2536109665, 4057775464, 5072219330, 10144438660, 20288877320]

約数ペア:

[(1, 20288877320), (2, 10144438660), (4, 5072219330), (5, 4057775464), (8, 2536109665), (10, 2028887732), (20, 1014443866), (40, 507221933), (163, 124471640), (326, 62235820), (652, 31117910), (815, 24894328), (1201, 16893320), (1304, 15558955), (1630, 12447164), (2402, 8446660), (2591, 7830520), (3260, 6223582), (4804, 4223330), (5182, 3915260), (6005, 3378664), (6520, 3111791), (9608, 2111665), (10364, 1957630), (12010, 1689332), (12955, 1566104), (20728, 978815), (24020, 844666), (25910, 783052), (48040, 422333), (51820, 391526), (103640, 195763)]