21238534

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{509}}^1\times {\mathrm{673}}^1$

素因数の和:1215

約数の個数: 16

約数和(自身を含む): 32999040

約数和(自身を除く): 11760506

約数列:

[1, 2, 31, 62, 509, 673, 1018, 1346, 15779, 20863, 31558, 41726, 342557, 685114, 10619267, 21238534]

約数ペア:

[(1, 21238534), (2, 10619267), (31, 685114), (62, 342557), (509, 41726), (673, 31558), (1018, 20863), (1346, 15779)]