21027813

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{12721}}^1$

素因数の和:12772

約数の個数: 16

約数和(自身を含む): 30532800

約数和(自身を除く): 9504987

約数列:

[1, 3, 19, 29, 57, 87, 551, 1653, 12721, 38163, 241699, 368909, 725097, 1106727, 7009271, 21027813]

約数ペア:

[(1, 21027813), (3, 7009271), (19, 1106727), (29, 725097), (57, 368909), (87, 241699), (551, 38163), (1653, 12721)]