21977007

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{5471}}^1$

素因数の和:5590

約数の個数: 16

約数和(自身を含む): 31868928

約数和(自身を除く): 9891921

約数列:

[1, 3, 13, 39, 103, 309, 1339, 4017, 5471, 16413, 71123, 213369, 563513, 1690539, 7325669, 21977007]

約数ペア:

[(1, 21977007), (3, 7325669), (13, 1690539), (39, 563513), (103, 213369), (309, 71123), (1339, 16413), (4017, 5471)]