20859201

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{571}}^1$

素因数の和:635

約数の個数: 40

約数和(自身を含む): 34882848

約数和(自身を除く): 14023647

約数列:

[1, 3, 9, 11, 27, 33, 41, 81, 99, 123, 297, 369, 451, 571, 891, 1107, 1353, 1713, 3321, 4059, 5139, 6281, 12177, 15417, 18843, 23411, 36531, 46251, 56529, 70233, 169587, 210699, 257521, 508761, 632097, 772563, 1896291, 2317689, 6953067, 20859201]

約数ペア:

[(1, 20859201), (3, 6953067), (9, 2317689), (11, 1896291), (27, 772563), (33, 632097), (41, 508761), (81, 257521), (99, 210699), (123, 169587), (297, 70233), (369, 56529), (451, 46251), (571, 36531), (891, 23411), (1107, 18843), (1353, 15417), (1713, 12177), (3321, 6281), (4059, 5139)]