20836557

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{227}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 36421632

約数和(自身を除く): 15585075

約数列:

[1, 3, 7, 9, 21, 31, 47, 63, 93, 141, 217, 227, 279, 329, 423, 651, 681, 987, 1457, 1589, 1953, 2043, 2961, 4371, 4767, 7037, 10199, 10669, 13113, 14301, 21111, 30597, 32007, 49259, 63333, 74683, 91791, 96021, 147777, 224049, 330739, 443331, 672147, 992217, 2315173, 2976651, 6945519, 20836557]

約数ペア:

[(1, 20836557), (3, 6945519), (7, 2976651), (9, 2315173), (21, 992217), (31, 672147), (47, 443331), (63, 330739), (93, 224049), (141, 147777), (217, 96021), (227, 91791), (279, 74683), (329, 63333), (423, 49259), (651, 32007), (681, 30597), (987, 21111), (1457, 14301), (1589, 13113), (1953, 10669), (2043, 10199), (2961, 7037), (4371, 4767)]