21938200

素因数分解:

$2^3\times 5^2\times {\mathrm{229}}^1\times {\mathrm{479}}^1$

素因数の和:724

約数の個数: 48

約数和(自身を含む): 51336000

約数和(自身を除く): 29397800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 229, 458, 479, 916, 958, 1145, 1832, 1916, 2290, 2395, 3832, 4580, 4790, 5725, 9160, 9580, 11450, 11975, 19160, 22900, 23950, 45800, 47900, 95800, 109691, 219382, 438764, 548455, 877528, 1096910, 2193820, 2742275, 4387640, 5484550, 10969100, 21938200]

約数ペア:

[(1, 21938200), (2, 10969100), (4, 5484550), (5, 4387640), (8, 2742275), (10, 2193820), (20, 1096910), (25, 877528), (40, 548455), (50, 438764), (100, 219382), (200, 109691), (229, 95800), (458, 47900), (479, 45800), (916, 23950), (958, 22900), (1145, 19160), (1832, 11975), (1916, 11450), (2290, 9580), (2395, 9160), (3832, 5725), (4580, 4790)]