21921711

素因数分解:

$3^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{12577}}^1$

素因数の和:12670

約数の個数: 16

約数和(自身を含む): 33809664

約数和(自身を除く): 11887953

約数列:

[1, 3, 7, 21, 83, 249, 581, 1743, 12577, 37731, 88039, 264117, 1043891, 3131673, 7307237, 21921711]

約数ペア:

[(1, 21921711), (3, 7307237), (7, 3131673), (21, 1043891), (83, 264117), (249, 88039), (581, 37731), (1743, 12577)]