21399821

素因数分解:

${\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{229}}^1\times {\mathrm{239}}^1$

素因数の和:508

約数の個数: 16

約数和(自身を含む): 23846400

約数和(自身を除く): 2446579

約数列:

[1, 17, 23, 229, 239, 391, 3893, 4063, 5267, 5497, 54731, 89539, 93449, 930427, 1258813, 21399821]

約数ペア:

[(1, 21399821), (17, 1258813), (23, 930427), (229, 93449), (239, 89539), (391, 54731), (3893, 5497), (4063, 5267)]