20517472

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{457}}^1$

素因数の和:551

約数の個数: 48

約数和(自身を含む): 42934752

約数和(自身を除く): 22417280

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 61, 92, 122, 184, 244, 368, 457, 488, 736, 914, 976, 1403, 1828, 1952, 2806, 3656, 5612, 7312, 10511, 11224, 14624, 21022, 22448, 27877, 42044, 44896, 55754, 84088, 111508, 168176, 223016, 336352, 446032, 641171, 892064, 1282342, 2564684, 5129368, 10258736, 20517472]

約数ペア:

[(1, 20517472), (2, 10258736), (4, 5129368), (8, 2564684), (16, 1282342), (23, 892064), (32, 641171), (46, 446032), (61, 336352), (92, 223016), (122, 168176), (184, 111508), (244, 84088), (368, 55754), (457, 44896), (488, 42044), (736, 27877), (914, 22448), (976, 21022), (1403, 14624), (1828, 11224), (1952, 10511), (2806, 7312), (3656, 5612)]