21078369

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{701}}^1$

素因数の和:977

約数の個数: 24

約数和(自身を含む): 32963112

約数和(自身を除く): 11884743

約数列:

[1, 3, 9, 13, 39, 117, 257, 701, 771, 2103, 2313, 3341, 6309, 9113, 10023, 27339, 30069, 82017, 180157, 540471, 1621413, 2342041, 7026123, 21078369]

約数ペア:

[(1, 21078369), (3, 7026123), (9, 2342041), (13, 1621413), (39, 540471), (117, 180157), (257, 82017), (701, 30069), (771, 27339), (2103, 10023), (2313, 9113), (3341, 6309)]