21420495

素因数分解:

$3^2\times 5^1\times {\mathrm{619}}^1\times {\mathrm{769}}^1$

素因数の和:1399

約数の個数: 24

約数和(自身を含む): 37237200

約数和(自身を除く): 15816705

約数列:

[1, 3, 5, 9, 15, 45, 619, 769, 1857, 2307, 3095, 3845, 5571, 6921, 9285, 11535, 27855, 34605, 476011, 1428033, 2380055, 4284099, 7140165, 21420495]

約数ペア:

[(1, 21420495), (3, 7140165), (5, 4284099), (9, 2380055), (15, 1428033), (45, 476011), (619, 34605), (769, 27855), (1857, 11535), (2307, 9285), (3095, 6921), (3845, 5571)]