21605188

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{577}}^1$

素因数の和:652

約数の個数: 48

約数和(自身を含む): 44279424

約数和(自身を除く): 22674236

約数列:

[1, 2, 4, 11, 22, 23, 37, 44, 46, 74, 92, 148, 253, 407, 506, 577, 814, 851, 1012, 1154, 1628, 1702, 2308, 3404, 6347, 9361, 12694, 13271, 18722, 21349, 25388, 26542, 37444, 42698, 53084, 85396, 145981, 234839, 291962, 469678, 491027, 583924, 939356, 982054, 1964108, 5401297, 10802594, 21605188]

約数ペア:

[(1, 21605188), (2, 10802594), (4, 5401297), (11, 1964108), (22, 982054), (23, 939356), (37, 583924), (44, 491027), (46, 469678), (74, 291962), (92, 234839), (148, 145981), (253, 85396), (407, 53084), (506, 42698), (577, 37444), (814, 26542), (851, 25388), (1012, 21349), (1154, 18722), (1628, 13271), (1702, 12694), (2308, 9361), (3404, 6347)]