201716721

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{233}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 315394560

約数和(自身を除く): 113677839

約数列:

[1, 3, 9, 29, 31, 87, 93, 107, 233, 261, 279, 321, 699, 899, 963, 2097, 2697, 3103, 3317, 6757, 7223, 8091, 9309, 9951, 20271, 21669, 24931, 27927, 29853, 60813, 65007, 74793, 96193, 209467, 224379, 288579, 628401, 722999, 772861, 865737, 1885203, 2168997, 2318583, 6506991, 6955749, 22412969, 67238907, 201716721]

約数ペア:

[(1, 201716721), (3, 67238907), (9, 22412969), (29, 6955749), (31, 6506991), (87, 2318583), (93, 2168997), (107, 1885203), (233, 865737), (261, 772861), (279, 722999), (321, 628401), (699, 288579), (899, 224379), (963, 209467), (2097, 96193), (2697, 74793), (3103, 65007), (3317, 60813), (6757, 29853), (7223, 27927), (8091, 24931), (9309, 21669), (9951, 20271)]