21378120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{178151}}^1$

素因数の和:178165

約数の個数: 32

約数和(自身を含む): 64134720

約数和(自身を除く): 42756600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 178151, 356302, 534453, 712604, 890755, 1068906, 1425208, 1781510, 2137812, 2672265, 3563020, 4275624, 5344530, 7126040, 10689060, 21378120]

約数ペア:

[(1, 21378120), (2, 10689060), (3, 7126040), (4, 5344530), (5, 4275624), (6, 3563020), (8, 2672265), (10, 2137812), (12, 1781510), (15, 1425208), (20, 1068906), (24, 890755), (30, 712604), (40, 534453), (60, 356302), (120, 178151)]