19866784

素因数分解:

$2^5\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2861}}^1$

素因数の和:2909

約数の個数: 48

約数和(自身を含む): 46158336

約数和(自身を除く): 26291552

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 112, 124, 217, 224, 248, 434, 496, 868, 992, 1736, 2861, 3472, 5722, 6944, 11444, 20027, 22888, 40054, 45776, 80108, 88691, 91552, 160216, 177382, 320432, 354764, 620837, 640864, 709528, 1241674, 1419056, 2483348, 2838112, 4966696, 9933392, 19866784]

約数ペア:

[(1, 19866784), (2, 9933392), (4, 4966696), (7, 2838112), (8, 2483348), (14, 1419056), (16, 1241674), (28, 709528), (31, 640864), (32, 620837), (56, 354764), (62, 320432), (112, 177382), (124, 160216), (217, 91552), (224, 88691), (248, 80108), (434, 45776), (496, 40054), (868, 22888), (992, 20027), (1736, 11444), (2861, 6944), (3472, 5722)]