81911760

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{48757}}^1$

素因数の和:48780

約数の個数: 80

約数和(自身を含む): 290207616

約数和(自身を除く): 208295856

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 48757, 97514, 146271, 195028, 243785, 292542, 341299, 390056, 487570, 585084, 682598, 731355, 780112, 975140, 1023897, 1170168, 1365196, 1462710, 1706495, 1950280, 2047794, 2340336, 2730392, 2925420, 3412990, 3900560, 4095588, 5119485, 5460784, 5850840, 6825980, 8191176, 10238970, 11701680, 13651960, 16382352, 20477940, 27303920, 40955880, 81911760]

約数ペア:

[(1, 81911760), (2, 40955880), (3, 27303920), (4, 20477940), (5, 16382352), (6, 13651960), (7, 11701680), (8, 10238970), (10, 8191176), (12, 6825980), (14, 5850840), (15, 5460784), (16, 5119485), (20, 4095588), (21, 3900560), (24, 3412990), (28, 2925420), (30, 2730392), (35, 2340336), (40, 2047794), (42, 1950280), (48, 1706495), (56, 1462710), (60, 1365196), (70, 1170168), (80, 1023897), (84, 975140), (105, 780112), (112, 731355), (120, 682598), (140, 585084), (168, 487570), (210, 390056), (240, 341299), (280, 292542), (336, 243785), (420, 195028), (560, 146271), (840, 97514), (1680, 48757)]