21115678

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{433}}^1\times {\mathrm{659}}^1$

素因数の和:1131

約数の個数: 16

約数和(自身を含む): 32654160

約数和(自身を除く): 11538482

約数列:

[1, 2, 37, 74, 433, 659, 866, 1318, 16021, 24383, 32042, 48766, 285347, 570694, 10557839, 21115678]

約数ペア:

[(1, 21115678), (2, 10557839), (37, 570694), (74, 285347), (433, 48766), (659, 32042), (866, 24383), (1318, 16021)]