21287934

素因数分解:

$2^1\times 3^4\times {\mathrm{331}}^1\times {\mathrm{397}}^1$

素因数の和:742

約数の個数: 40

約数和(自身を含む): 47965368

約数和(自身を除く): 26677434

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 331, 397, 662, 794, 993, 1191, 1986, 2382, 2979, 3573, 5958, 7146, 8937, 10719, 17874, 21438, 26811, 32157, 53622, 64314, 131407, 262814, 394221, 788442, 1182663, 2365326, 3547989, 7095978, 10643967, 21287934]

約数ペア:

[(1, 21287934), (2, 10643967), (3, 7095978), (6, 3547989), (9, 2365326), (18, 1182663), (27, 788442), (54, 394221), (81, 262814), (162, 131407), (331, 64314), (397, 53622), (662, 32157), (794, 26811), (993, 21438), (1191, 17874), (1986, 10719), (2382, 8937), (2979, 7146), (3573, 5958)]