21072741

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{4091}}^1$

素因数の和:4212

約数の個数: 16

約数和(自身を含む): 30051648

約数和(自身を除く): 8978907

約数列:

[1, 3, 17, 51, 101, 303, 1717, 4091, 5151, 12273, 69547, 208641, 413191, 1239573, 7024247, 21072741]

約数ペア:

[(1, 21072741), (3, 7024247), (17, 1239573), (51, 413191), (101, 208641), (303, 69547), (1717, 12273), (4091, 5151)]