21121980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{32003}}^1$

素因数の和:32026

約数の個数: 48

約数和(自身を含む): 64520064

約数和(自身を除く): 43398084

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660, 32003, 64006, 96009, 128012, 160015, 192018, 320030, 352033, 384036, 480045, 640060, 704066, 960090, 1056099, 1408132, 1760165, 1920180, 2112198, 3520330, 4224396, 5280495, 7040660, 10560990, 21121980]

約数ペア:

[(1, 21121980), (2, 10560990), (3, 7040660), (4, 5280495), (5, 4224396), (6, 3520330), (10, 2112198), (11, 1920180), (12, 1760165), (15, 1408132), (20, 1056099), (22, 960090), (30, 704066), (33, 640060), (44, 480045), (55, 384036), (60, 352033), (66, 320030), (110, 192018), (132, 160015), (165, 128012), (220, 96009), (330, 64006), (660, 32003)]