21288741

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1\times {\mathrm{727}}^1$

素因数の和:1000

約数の個数: 16

約数和(自身を含む): 29213184

約数和(自身を除く): 7924443

約数列:

[1, 3, 43, 129, 227, 681, 727, 2181, 9761, 29283, 31261, 93783, 165029, 495087, 7096247, 21288741]

約数ペア:

[(1, 21288741), (3, 7096247), (43, 495087), (129, 165029), (227, 93783), (681, 31261), (727, 29283), (2181, 9761)]