21720180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{362003}}^1$

素因数の和:362015

約数の個数: 24

約数和(自身を含む): 60816672

約数和(自身を除く): 39096492

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 362003, 724006, 1086009, 1448012, 1810015, 2172018, 3620030, 4344036, 5430045, 7240060, 10860090, 21720180]

約数ペア:

[(1, 21720180), (2, 10860090), (3, 7240060), (4, 5430045), (5, 4344036), (6, 3620030), (10, 2172018), (12, 1810015), (15, 1448012), (20, 1086009), (30, 724006), (60, 362003)]