20481640

素因数分解:

$2^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{3391}}^1$

素因数の和:3553

約数の個数: 32

約数和(自身を含む): 46402560

約数和(自身を除く): 25920920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 151, 302, 604, 755, 1208, 1510, 3020, 3391, 6040, 6782, 13564, 16955, 27128, 33910, 67820, 135640, 512041, 1024082, 2048164, 2560205, 4096328, 5120410, 10240820, 20481640]

約数ペア:

[(1, 20481640), (2, 10240820), (4, 5120410), (5, 4096328), (8, 2560205), (10, 2048164), (20, 1024082), (40, 512041), (151, 135640), (302, 67820), (604, 33910), (755, 27128), (1208, 16955), (1510, 13564), (3020, 6782), (3391, 6040)]