21809772

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{193}}^1$

素因数の和:319

約数の個数: 72

約数和(自身を含む): 57481424

約数和(自身を除く): 35671652

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 73, 86, 129, 146, 172, 193, 219, 258, 292, 386, 387, 438, 516, 579, 657, 772, 774, 876, 1158, 1314, 1548, 1737, 2316, 2628, 3139, 3474, 6278, 6948, 8299, 9417, 12556, 14089, 16598, 18834, 24897, 28178, 28251, 33196, 37668, 42267, 49794, 56356, 56502, 74691, 84534, 99588, 113004, 126801, 149382, 169068, 253602, 298764, 507204, 605827, 1211654, 1817481, 2423308, 3634962, 5452443, 7269924, 10904886, 21809772]

約数ペア:

[(1, 21809772), (2, 10904886), (3, 7269924), (4, 5452443), (6, 3634962), (9, 2423308), (12, 1817481), (18, 1211654), (36, 605827), (43, 507204), (73, 298764), (86, 253602), (129, 169068), (146, 149382), (172, 126801), (193, 113004), (219, 99588), (258, 84534), (292, 74691), (386, 56502), (387, 56356), (438, 49794), (516, 42267), (579, 37668), (657, 33196), (772, 28251), (774, 28178), (876, 24897), (1158, 18834), (1314, 16598), (1548, 14089), (1737, 12556), (2316, 9417), (2628, 8299), (3139, 6948), (3474, 6278)]