21006430

素因数分解:

$2^1\times 5^1\times {\mathrm{509}}^1\times {\mathrm{4127}}^1$

素因数の和:4643

約数の個数: 16

約数和(自身を含む): 37895040

約数和(自身を除く): 16888610

約数列:

[1, 2, 5, 10, 509, 1018, 2545, 4127, 5090, 8254, 20635, 41270, 2100643, 4201286, 10503215, 21006430]

約数ペア:

[(1, 21006430), (2, 10503215), (5, 4201286), (10, 2100643), (509, 41270), (1018, 20635), (2545, 8254), (4127, 5090)]