210621040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{569}}^1\times {\mathrm{661}}^1$

素因数の和:1250

約数の個数: 80

約数和(自身を含む): 561481920

約数和(自身を除く): 350860880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 569, 661, 1138, 1322, 2276, 2644, 2845, 3305, 3983, 4552, 4627, 5288, 5690, 6610, 7966, 9104, 9254, 10576, 11380, 13220, 15932, 18508, 19915, 22760, 23135, 26440, 31864, 37016, 39830, 45520, 46270, 52880, 63728, 74032, 79660, 92540, 159320, 185080, 318640, 370160, 376109, 752218, 1504436, 1880545, 2632763, 3008872, 3761090, 5265526, 6017744, 7522180, 10531052, 13163815, 15044360, 21062104, 26327630, 30088720, 42124208, 52655260, 105310520, 210621040]

約数ペア:

[(1, 210621040), (2, 105310520), (4, 52655260), (5, 42124208), (7, 30088720), (8, 26327630), (10, 21062104), (14, 15044360), (16, 13163815), (20, 10531052), (28, 7522180), (35, 6017744), (40, 5265526), (56, 3761090), (70, 3008872), (80, 2632763), (112, 1880545), (140, 1504436), (280, 752218), (560, 376109), (569, 370160), (661, 318640), (1138, 185080), (1322, 159320), (2276, 92540), (2644, 79660), (2845, 74032), (3305, 63728), (3983, 52880), (4552, 46270), (4627, 45520), (5288, 39830), (5690, 37016), (6610, 31864), (7966, 26440), (9104, 23135), (9254, 22760), (10576, 19915), (11380, 18508), (13220, 15932)]