21063965

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{367}}^1\times {\mathrm{883}}^1$

素因数の和:1268

約数の個数: 16

約数和(自身を含む): 27326208

約数和(自身を除く): 6262243

約数列:

[1, 5, 13, 65, 367, 883, 1835, 4415, 4771, 11479, 23855, 57395, 324061, 1620305, 4212793, 21063965]

約数ペア:

[(1, 21063965), (5, 4212793), (13, 1620305), (65, 324061), (367, 57395), (883, 23855), (1835, 11479), (4415, 4771)]