21482020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{153443}}^1$

素因数の和:153459

約数の個数: 24

約数和(自身を含む): 51557184

約数和(自身を除く): 30075164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 153443, 306886, 613772, 767215, 1074101, 1534430, 2148202, 3068860, 4296404, 5370505, 10741010, 21482020]

約数ペア:

[(1, 21482020), (2, 10741010), (4, 5370505), (5, 4296404), (7, 3068860), (10, 2148202), (14, 1534430), (20, 1074101), (28, 767215), (35, 613772), (70, 306886), (140, 153443)]