20390708

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{1237}}^1$

素因数の和:1571

約数の個数: 24

約数和(自身を含む): 38581032

約数和(自身を除く): 18190324

約数列:

[1, 2, 4, 13, 26, 52, 317, 634, 1237, 1268, 2474, 4121, 4948, 8242, 16081, 16484, 32162, 64324, 392129, 784258, 1568516, 5097677, 10195354, 20390708]

約数ペア:

[(1, 20390708), (2, 10195354), (4, 5097677), (13, 1568516), (26, 784258), (52, 392129), (317, 64324), (634, 32162), (1237, 16484), (1268, 16081), (2474, 8242), (4121, 4948)]