21893807

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{631}}^1$

素因数の和:818

約数の個数: 16

約数和(自身を含む): 25163712

約数和(自身を除く): 3269905

約数列:

[1, 13, 17, 157, 221, 631, 2041, 2669, 8203, 10727, 34697, 99067, 139451, 1287871, 1684139, 21893807]

約数ペア:

[(1, 21893807), (13, 1684139), (17, 1287871), (157, 139451), (221, 99067), (631, 34697), (2041, 10727), (2669, 8203)]