20805220

素因数分解:

$2^2\times 5^1\times {\mathrm{613}}^1\times {\mathrm{1697}}^1$

素因数の和:2319

約数の個数: 24

約数和(自身を含む): 43788024

約数和(自身を除く): 22982804

約数列:

[1, 2, 4, 5, 10, 20, 613, 1226, 1697, 2452, 3065, 3394, 6130, 6788, 8485, 12260, 16970, 33940, 1040261, 2080522, 4161044, 5201305, 10402610, 20805220]

約数ペア:

[(1, 20805220), (2, 10402610), (4, 5201305), (5, 4161044), (10, 2080522), (20, 1040261), (613, 33940), (1226, 16970), (1697, 12260), (2452, 8485), (3065, 6788), (3394, 6130)]