20903727

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{769}}^1$

素因数の和:843

約数の個数: 32

約数和(自身を含む): 32598720

約数和(自身を除く): 11694993

約数列:

[1, 3, 13, 17, 39, 41, 51, 123, 221, 533, 663, 697, 769, 1599, 2091, 2307, 9061, 9997, 13073, 27183, 29991, 31529, 39219, 94587, 169949, 409877, 509847, 535993, 1229631, 1607979, 6967909, 20903727]

約数ペア:

[(1, 20903727), (3, 6967909), (13, 1607979), (17, 1229631), (39, 535993), (41, 509847), (51, 409877), (123, 169949), (221, 94587), (533, 39219), (663, 31529), (697, 29991), (769, 27183), (1599, 13073), (2091, 9997), (2307, 9061)]