55555520

素因数分解:

$2^6\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1249}}^1$

素因数の和:1405

約数の個数: 56

約数和(自身を含む): 133350000

約数和(自身を除く): 77794480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 139, 160, 278, 320, 556, 695, 1112, 1249, 1390, 2224, 2498, 2780, 4448, 4996, 5560, 6245, 8896, 9992, 11120, 12490, 19984, 22240, 24980, 39968, 44480, 49960, 79936, 99920, 173611, 199840, 347222, 399680, 694444, 868055, 1388888, 1736110, 2777776, 3472220, 5555552, 6944440, 11111104, 13888880, 27777760, 55555520]

約数ペア:

[(1, 55555520), (2, 27777760), (4, 13888880), (5, 11111104), (8, 6944440), (10, 5555552), (16, 3472220), (20, 2777776), (32, 1736110), (40, 1388888), (64, 868055), (80, 694444), (139, 399680), (160, 347222), (278, 199840), (320, 173611), (556, 99920), (695, 79936), (1112, 49960), (1249, 44480), (1390, 39968), (2224, 24980), (2498, 22240), (2780, 19984), (4448, 12490), (4996, 11120), (5560, 9992), (6245, 8896)]