21239224

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{613}}^1$

素因数の和:751

約数の個数: 32

約数和(自身を含む): 41113440

約数和(自身を除く): 19874216

約数列:

[1, 2, 4, 8, 61, 71, 122, 142, 244, 284, 488, 568, 613, 1226, 2452, 4331, 4904, 8662, 17324, 34648, 37393, 43523, 74786, 87046, 149572, 174092, 299144, 348184, 2654903, 5309806, 10619612, 21239224]

約数ペア:

[(1, 21239224), (2, 10619612), (4, 5309806), (8, 2654903), (61, 348184), (71, 299144), (122, 174092), (142, 149572), (244, 87046), (284, 74786), (488, 43523), (568, 37393), (613, 34648), (1226, 17324), (2452, 8662), (4331, 4904)]