20394928

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{353}}^1$

素因数の和:541

約数の個数: 40

約数和(自身を含む): 41613408

約数和(自身を除く): 21218480

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 157, 184, 314, 353, 368, 628, 706, 1256, 1412, 2512, 2824, 3611, 5648, 7222, 8119, 14444, 16238, 28888, 32476, 55421, 57776, 64952, 110842, 129904, 221684, 443368, 886736, 1274683, 2549366, 5098732, 10197464, 20394928]

約数ペア:

[(1, 20394928), (2, 10197464), (4, 5098732), (8, 2549366), (16, 1274683), (23, 886736), (46, 443368), (92, 221684), (157, 129904), (184, 110842), (314, 64952), (353, 57776), (368, 55421), (628, 32476), (706, 28888), (1256, 16238), (1412, 14444), (2512, 8119), (2824, 7222), (3611, 5648)]