20809802

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{89}}^1$

素因数の和:167

約数の個数: 48

約数和(自身を含む): 37626120

約数和(自身を除く): 16816318

約数列:

[1, 2, 13, 17, 23, 26, 34, 46, 89, 178, 221, 299, 391, 442, 529, 598, 782, 1058, 1157, 1513, 2047, 2314, 3026, 4094, 5083, 6877, 8993, 10166, 13754, 17986, 19669, 26611, 34799, 39338, 47081, 53222, 69598, 94162, 116909, 233818, 452387, 612053, 800377, 904774, 1224106, 1600754, 10404901, 20809802]

約数ペア:

[(1, 20809802), (2, 10404901), (13, 1600754), (17, 1224106), (23, 904774), (26, 800377), (34, 612053), (46, 452387), (89, 233818), (178, 116909), (221, 94162), (299, 69598), (391, 53222), (442, 47081), (529, 39338), (598, 34799), (782, 26611), (1058, 19669), (1157, 17986), (1513, 13754), (2047, 10166), (2314, 8993), (3026, 6877), (4094, 5083)]