20198451

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{307}}^1$

素因数の和:571

約数の個数: 32

約数和(自身を含む): 33392128

約数和(自身を除く): 13193677

約数列:

[1, 3, 7, 13, 21, 39, 91, 241, 273, 307, 723, 921, 1687, 2149, 3133, 3991, 5061, 6447, 9399, 11973, 21931, 27937, 65793, 73987, 83811, 221961, 517909, 961831, 1553727, 2885493, 6732817, 20198451]

約数ペア:

[(1, 20198451), (3, 6732817), (7, 2885493), (13, 1553727), (21, 961831), (39, 517909), (91, 221961), (241, 83811), (273, 73987), (307, 65793), (723, 27937), (921, 21931), (1687, 11973), (2149, 9399), (3133, 6447), (3991, 5061)]