21162970

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{727}}^1$

素因数の和:846

約数の個数: 32

約数和(自身を含む): 39626496

約数和(自身を除く): 18463526

約数列:

[1, 2, 5, 10, 41, 71, 82, 142, 205, 355, 410, 710, 727, 1454, 2911, 3635, 5822, 7270, 14555, 29110, 29807, 51617, 59614, 103234, 149035, 258085, 298070, 516170, 2116297, 4232594, 10581485, 21162970]

約数ペア:

[(1, 21162970), (2, 10581485), (5, 4232594), (10, 2116297), (41, 516170), (71, 298070), (82, 258085), (142, 149035), (205, 103234), (355, 59614), (410, 51617), (710, 29807), (727, 29110), (1454, 14555), (2911, 7270), (3635, 5822)]