20419281

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2777}}^1$

素因数の和:2845

約数の個数: 24

約数和(自身を含む): 31780320

約数和(自身を除く): 11361039

約数列:

[1, 3, 9, 19, 43, 57, 129, 171, 387, 817, 2451, 2777, 7353, 8331, 24993, 52763, 119411, 158289, 358233, 474867, 1074699, 2268809, 6806427, 20419281]

約数ペア:

[(1, 20419281), (3, 6806427), (9, 2268809), (19, 1074699), (43, 474867), (57, 358233), (129, 158289), (171, 119411), (387, 52763), (817, 24993), (2451, 8331), (2777, 7353)]