20659527

素因数分解:

$3^2\times 7^2\times {\mathrm{79}}^1\times {\mathrm{593}}^1$

素因数の和:692

約数の個数: 36

約数和(自身を含む): 35212320

約数和(自身を除く): 14552793

約数列:

[1, 3, 7, 9, 21, 49, 63, 79, 147, 237, 441, 553, 593, 711, 1659, 1779, 3871, 4151, 4977, 5337, 11613, 12453, 29057, 34839, 37359, 46847, 87171, 140541, 261513, 327929, 421623, 983787, 2295503, 2951361, 6886509, 20659527]

約数ペア:

[(1, 20659527), (3, 6886509), (7, 2951361), (9, 2295503), (21, 983787), (49, 421623), (63, 327929), (79, 261513), (147, 140541), (237, 87171), (441, 46847), (553, 37359), (593, 34839), (711, 29057), (1659, 12453), (1779, 11613), (3871, 5337), (4151, 4977)]