21270743

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{1123}}^1$

素因数の和:1214

約数の個数: 16

約数和(自身を含む): 24170496

約数和(自身を除く): 2899753

約数列:

[1, 13, 31, 47, 403, 611, 1123, 1457, 14599, 18941, 34813, 52781, 452569, 686153, 1636211, 21270743]

約数ペア:

[(1, 21270743), (13, 1636211), (31, 686153), (47, 452569), (403, 52781), (611, 34813), (1123, 18941), (1457, 14599)]