21408065

素因数分解:

$5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{2671}}^1$

素因数の和:2912

約数の個数: 16

約数和(自身を含む): 29498880

約数和(自身を除く): 8090815

約数列:

[1, 5, 7, 35, 229, 1145, 1603, 2671, 8015, 13355, 18697, 93485, 611659, 3058295, 4281613, 21408065]

約数ペア:

[(1, 21408065), (5, 4281613), (7, 3058295), (35, 611659), (229, 93485), (1145, 18697), (1603, 13355), (2671, 8015)]