15919995

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 31933440

約数和(自身を除く): 16013445

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 107, 109, 195, 273, 321, 327, 455, 535, 545, 749, 763, 1365, 1391, 1417, 1605, 1635, 2247, 2289, 3745, 3815, 4173, 4251, 6955, 7085, 9737, 9919, 11235, 11445, 11663, 20865, 21255, 29211, 29757, 34989, 48685, 49595, 58315, 81641, 146055, 148785, 151619, 174945, 244923, 408205, 454857, 758095, 1061333, 1224615, 2274285, 3183999, 5306665, 15919995]

約数ペア:

[(1, 15919995), (3, 5306665), (5, 3183999), (7, 2274285), (13, 1224615), (15, 1061333), (21, 758095), (35, 454857), (39, 408205), (65, 244923), (91, 174945), (105, 151619), (107, 148785), (109, 146055), (195, 81641), (273, 58315), (321, 49595), (327, 48685), (455, 34989), (535, 29757), (545, 29211), (749, 21255), (763, 20865), (1365, 11663), (1391, 11445), (1417, 11235), (1605, 9919), (1635, 9737), (2247, 7085), (2289, 6955), (3745, 4251), (3815, 4173)]