21203413

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{509}}^1\times {\mathrm{541}}^1$

素因数の和:1068

約数の個数: 16

約数和(自身を含む): 26536320

約数和(自身を除く): 5332907

約数列:

[1, 7, 11, 77, 509, 541, 3563, 3787, 5599, 5951, 39193, 41657, 275369, 1927583, 3029059, 21203413]

約数ペア:

[(1, 21203413), (7, 3029059), (11, 1927583), (77, 275369), (509, 41657), (541, 39193), (3563, 5951), (3787, 5599)]