21007995

素因数分解:

$3^1\times 5^1\times {\mathrm{467}}^1\times {\mathrm{2999}}^1$

素因数の和:3474

約数の個数: 16

約数和(自身を含む): 33696000

約数和(自身を除く): 12688005

約数列:

[1, 3, 5, 15, 467, 1401, 2335, 2999, 7005, 8997, 14995, 44985, 1400533, 4201599, 7002665, 21007995]

約数ペア:

[(1, 21007995), (3, 7002665), (5, 4201599), (15, 1400533), (467, 44985), (1401, 14995), (2335, 8997), (2999, 7005)]