21840429

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{5437}}^1$

素因数の和:5556

約数の個数: 16

約数和(自身を含む): 31670912

約数和(自身を除く): 9830483

約数列:

[1, 3, 13, 39, 103, 309, 1339, 4017, 5437, 16311, 70681, 212043, 560011, 1680033, 7280143, 21840429]

約数ペア:

[(1, 21840429), (3, 7280143), (13, 1680033), (39, 560011), (103, 212043), (309, 70681), (1339, 16311), (4017, 5437)]