21931269

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 31664640

約数和(自身を除く): 9733371

約数列:

[1, 3, 37, 41, 61, 79, 111, 123, 183, 237, 1517, 2257, 2501, 2923, 3239, 4551, 4819, 6771, 7503, 8769, 9717, 14457, 92537, 119843, 178303, 197579, 277611, 359529, 534909, 592737, 7310423, 21931269]

約数ペア:

[(1, 21931269), (3, 7310423), (37, 592737), (41, 534909), (61, 359529), (79, 277611), (111, 197579), (123, 178303), (183, 119843), (237, 92537), (1517, 14457), (2257, 9717), (2501, 8769), (2923, 7503), (3239, 6771), (4551, 4819)]