20280087

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{509}}^1$

素因数の和:767

約数の個数: 24

約数和(自身を含む): 31028400

約数和(自身を除く): 10748313

約数列:

[1, 3, 9, 19, 57, 171, 233, 509, 699, 1527, 2097, 4427, 4581, 9671, 13281, 29013, 39843, 87039, 118597, 355791, 1067373, 2253343, 6760029, 20280087]

約数ペア:

[(1, 20280087), (3, 6760029), (9, 2253343), (19, 1067373), (57, 355791), (171, 118597), (233, 87039), (509, 39843), (699, 29013), (1527, 13281), (2097, 9671), (4427, 4581)]