20870109

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1607}}^1$

素因数の和:1666

約数の個数: 32

約数和(自身を含む): 34218240

約数和(自身を除く): 13348131

約数列:

[1, 3, 9, 13, 27, 37, 39, 111, 117, 333, 351, 481, 999, 1443, 1607, 4329, 4821, 12987, 14463, 20891, 43389, 59459, 62673, 178377, 188019, 535131, 564057, 772967, 1605393, 2318901, 6956703, 20870109]

約数ペア:

[(1, 20870109), (3, 6956703), (9, 2318901), (13, 1605393), (27, 772967), (37, 564057), (39, 535131), (111, 188019), (117, 178377), (333, 62673), (351, 59459), (481, 43389), (999, 20891), (1443, 14463), (1607, 12987), (4329, 4821)]