21119797

素因数分解:

${\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{193}}^1$

素因数の和:408

約数の個数: 16

約数和(自身を含む): 23172912

約数和(自身を除く): 2053115

約数列:

[1, 17, 41, 157, 193, 697, 2669, 3281, 6437, 7913, 30301, 109429, 134521, 515117, 1242341, 21119797]

約数ペア:

[(1, 21119797), (17, 1242341), (41, 515117), (157, 134521), (193, 109429), (697, 30301), (2669, 7913), (3281, 6437)]