19377760

素因数分解:

$2^5\times 5^1\times {\mathrm{281}}^1\times {\mathrm{431}}^1$

素因数の和:727

約数の個数: 48

約数和(自身を含む): 46049472

約数和(自身を除く): 26671712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 281, 431, 562, 862, 1124, 1405, 1724, 2155, 2248, 2810, 3448, 4310, 4496, 5620, 6896, 8620, 8992, 11240, 13792, 17240, 22480, 34480, 44960, 68960, 121111, 242222, 484444, 605555, 968888, 1211110, 1937776, 2422220, 3875552, 4844440, 9688880, 19377760]

約数ペア:

[(1, 19377760), (2, 9688880), (4, 4844440), (5, 3875552), (8, 2422220), (10, 1937776), (16, 1211110), (20, 968888), (32, 605555), (40, 484444), (80, 242222), (160, 121111), (281, 68960), (431, 44960), (562, 34480), (862, 22480), (1124, 17240), (1405, 13792), (1724, 11240), (2155, 8992), (2248, 8620), (2810, 6896), (3448, 5620), (4310, 4496)]