21416140

素因数分解:

$2^2\times 5^1\times {\mathrm{631}}^1\times {\mathrm{1697}}^1$

素因数の和:2337

約数の個数: 24

約数和(自身を含む): 45071712

約数和(自身を除く): 23655572

約数列:

[1, 2, 4, 5, 10, 20, 631, 1262, 1697, 2524, 3155, 3394, 6310, 6788, 8485, 12620, 16970, 33940, 1070807, 2141614, 4283228, 5354035, 10708070, 21416140]

約数ペア:

[(1, 21416140), (2, 10708070), (4, 5354035), (5, 4283228), (10, 2141614), (20, 1070807), (631, 33940), (1262, 16970), (1697, 12620), (2524, 8485), (3155, 6788), (3394, 6310)]