21037340

素因数分解:

$2^2\times 5^1\times {\mathrm{811}}^1\times {\mathrm{1297}}^1$

素因数の和:2117

約数の個数: 24

約数和(自身を含む): 44266992

約数和(自身を除く): 23229652

約数列:

[1, 2, 4, 5, 10, 20, 811, 1297, 1622, 2594, 3244, 4055, 5188, 6485, 8110, 12970, 16220, 25940, 1051867, 2103734, 4207468, 5259335, 10518670, 21037340]

約数ペア:

[(1, 21037340), (2, 10518670), (4, 5259335), (5, 4207468), (10, 2103734), (20, 1051867), (811, 25940), (1297, 16220), (1622, 12970), (2594, 8110), (3244, 6485), (4055, 5188)]