20991702

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{1571}}^1$

素因数の和:1724

約数の個数: 32

約数和(自身を含む): 44820864

約数和(自身を除く): 23829162

約数列:

[1, 2, 3, 6, 17, 34, 51, 102, 131, 262, 393, 786, 1571, 2227, 3142, 4454, 4713, 6681, 9426, 13362, 26707, 53414, 80121, 160242, 205801, 411602, 617403, 1234806, 3498617, 6997234, 10495851, 20991702]

約数ペア:

[(1, 20991702), (2, 10495851), (3, 6997234), (6, 3498617), (17, 1234806), (34, 617403), (51, 411602), (102, 205801), (131, 160242), (262, 80121), (393, 53414), (786, 26707), (1571, 13362), (2227, 9426), (3142, 6681), (4454, 4713)]