19963600

素因数分解:

$2^4\times 5^2\times {\mathrm{29}}^1\times {\mathrm{1721}}^1$

素因数の和:1768

約数の個数: 60

約数和(自身を含む): 49645260

約数和(自身を除く): 29681660

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 40, 50, 58, 80, 100, 116, 145, 200, 232, 290, 400, 464, 580, 725, 1160, 1450, 1721, 2320, 2900, 3442, 5800, 6884, 8605, 11600, 13768, 17210, 27536, 34420, 43025, 49909, 68840, 86050, 99818, 137680, 172100, 199636, 249545, 344200, 399272, 499090, 688400, 798544, 998180, 1247725, 1996360, 2495450, 3992720, 4990900, 9981800, 19963600]

約数ペア:

[(1, 19963600), (2, 9981800), (4, 4990900), (5, 3992720), (8, 2495450), (10, 1996360), (16, 1247725), (20, 998180), (25, 798544), (29, 688400), (40, 499090), (50, 399272), (58, 344200), (80, 249545), (100, 199636), (116, 172100), (145, 137680), (200, 99818), (232, 86050), (290, 68840), (400, 49909), (464, 43025), (580, 34420), (725, 27536), (1160, 17210), (1450, 13768), (1721, 11600), (2320, 8605), (2900, 6884), (3442, 5800)]