21333535

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{3947}}^1$

素因数の和:4022

約数の個数: 16

約数和(自身を含む): 27288576

約数和(自身を除く): 5955041

約数列:

[1, 5, 23, 47, 115, 235, 1081, 3947, 5405, 19735, 90781, 185509, 453905, 927545, 4266707, 21333535]

約数ペア:

[(1, 21333535), (5, 4266707), (23, 927545), (47, 453905), (115, 185509), (235, 90781), (1081, 19735), (3947, 5405)]