21491070

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1459}}^1$

素因数の和:1960

約数の個数: 32

約数和(自身を含む): 51719040

約数和(自身を除く): 30227970

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 491, 982, 1459, 1473, 2455, 2918, 2946, 4377, 4910, 7295, 7365, 8754, 14590, 14730, 21885, 43770, 716369, 1432738, 2149107, 3581845, 4298214, 7163690, 10745535, 21491070]

約数ペア:

[(1, 21491070), (2, 10745535), (3, 7163690), (5, 4298214), (6, 3581845), (10, 2149107), (15, 1432738), (30, 716369), (491, 43770), (982, 21885), (1459, 14730), (1473, 14590), (2455, 8754), (2918, 7365), (2946, 7295), (4377, 4910)]