20263568

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2633}}^1$

素因数の和:2691

約数の個数: 40

約数和(自身を含む): 43439928

約数和(自身を除く): 23176360

約数列:

[1, 2, 4, 8, 13, 16, 26, 37, 52, 74, 104, 148, 208, 296, 481, 592, 962, 1924, 2633, 3848, 5266, 7696, 10532, 21064, 34229, 42128, 68458, 97421, 136916, 194842, 273832, 389684, 547664, 779368, 1266473, 1558736, 2532946, 5065892, 10131784, 20263568]

約数ペア:

[(1, 20263568), (2, 10131784), (4, 5065892), (8, 2532946), (13, 1558736), (16, 1266473), (26, 779368), (37, 547664), (52, 389684), (74, 273832), (104, 194842), (148, 136916), (208, 97421), (296, 68458), (481, 42128), (592, 34229), (962, 21064), (1924, 10532), (2633, 7696), (3848, 5266)]