20543500

素因数分解:

$2^2\times 5^3\times {\mathrm{181}}^1\times {\mathrm{227}}^1$

素因数の和:427

約数の個数: 48

約数和(自身を含む): 45313632

約数和(自身を除く): 24770132

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 181, 227, 250, 362, 454, 500, 724, 905, 908, 1135, 1810, 2270, 3620, 4525, 4540, 5675, 9050, 11350, 18100, 22625, 22700, 28375, 41087, 45250, 56750, 82174, 90500, 113500, 164348, 205435, 410870, 821740, 1027175, 2054350, 4108700, 5135875, 10271750, 20543500]

約数ペア:

[(1, 20543500), (2, 10271750), (4, 5135875), (5, 4108700), (10, 2054350), (20, 1027175), (25, 821740), (50, 410870), (100, 205435), (125, 164348), (181, 113500), (227, 90500), (250, 82174), (362, 56750), (454, 45250), (500, 41087), (724, 28375), (905, 22700), (908, 22625), (1135, 18100), (1810, 11350), (2270, 9050), (3620, 5675), (4525, 4540)]