20555265

素因数分解:

$3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{113}}^1\times {\mathrm{181}}^1$

素因数の和:369

約数の個数: 32

約数和(自身を含む): 33860736

約数和(自身を除く): 13305471

約数列:

[1, 3, 5, 15, 67, 113, 181, 201, 335, 339, 543, 565, 905, 1005, 1695, 2715, 7571, 12127, 20453, 22713, 36381, 37855, 60635, 61359, 102265, 113565, 181905, 306795, 1370351, 4111053, 6851755, 20555265]

約数ペア:

[(1, 20555265), (3, 6851755), (5, 4111053), (15, 1370351), (67, 306795), (113, 181905), (181, 113565), (201, 102265), (335, 61359), (339, 60635), (543, 37855), (565, 36381), (905, 22713), (1005, 20453), (1695, 12127), (2715, 7571)]