21267505

素因数分解:

$5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{7321}}^1$

素因数の和:7416

約数の個数: 16

約数和(自身を含む): 29522304

約数和(自身を除く): 8254799

約数列:

[1, 5, 7, 35, 83, 415, 581, 2905, 7321, 36605, 51247, 256235, 607643, 3038215, 4253501, 21267505]

約数ペア:

[(1, 21267505), (5, 4253501), (7, 3038215), (35, 607643), (83, 256235), (415, 51247), (581, 36605), (2905, 7321)]