20681576

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{1321}}^1$

素因数の和:1449

約数の個数: 32

約数和(自身を含む): 41246400

約数和(自身を除く): 20564824

約数列:

[1, 2, 4, 8, 19, 38, 76, 103, 152, 206, 412, 824, 1321, 1957, 2642, 3914, 5284, 7828, 10568, 15656, 25099, 50198, 100396, 136063, 200792, 272126, 544252, 1088504, 2585197, 5170394, 10340788, 20681576]

約数ペア:

[(1, 20681576), (2, 10340788), (4, 5170394), (8, 2585197), (19, 1088504), (38, 544252), (76, 272126), (103, 200792), (152, 136063), (206, 100396), (412, 50198), (824, 25099), (1321, 15656), (1957, 10568), (2642, 7828), (3914, 5284)]