27740020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18013}}^1$

素因数の和:18040

約数の個数: 48

約数和(自身を含む): 72632448

約数和(自身を除く): 44892428

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 18013, 36026, 72052, 90065, 126091, 180130, 198143, 252182, 360260, 396286, 504364, 630455, 792572, 990715, 1260910, 1387001, 1981430, 2521820, 2774002, 3962860, 5548004, 6935005, 13870010, 27740020]

約数ペア:

[(1, 27740020), (2, 13870010), (4, 6935005), (5, 5548004), (7, 3962860), (10, 2774002), (11, 2521820), (14, 1981430), (20, 1387001), (22, 1260910), (28, 990715), (35, 792572), (44, 630455), (55, 504364), (70, 396286), (77, 360260), (110, 252182), (140, 198143), (154, 180130), (220, 126091), (308, 90065), (385, 72052), (770, 36026), (1540, 18013)]