20535999

素因数分解:

$3^1\times {\mathrm{11}}^3\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:212

約数の個数: 32

約数和(自身を含む): 31153920

約数和(自身を除く): 10617921

約数列:

[1, 3, 11, 33, 37, 111, 121, 139, 363, 407, 417, 1221, 1331, 1529, 3993, 4477, 4587, 5143, 13431, 15429, 16819, 49247, 50457, 56573, 147741, 169719, 185009, 555027, 622303, 1866909, 6845333, 20535999]

約数ペア:

[(1, 20535999), (3, 6845333), (11, 1866909), (33, 622303), (37, 555027), (111, 185009), (121, 169719), (139, 147741), (363, 56573), (407, 50457), (417, 49247), (1221, 16819), (1331, 15429), (1529, 13431), (3993, 5143), (4477, 4587)]