138843560

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{907}}^1$

素因数の和:1050

約数の個数: 64

約数和(自身を含む): 323611200

約数和(自身を除く): 184767640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 89, 172, 178, 215, 344, 356, 430, 445, 712, 860, 890, 907, 1720, 1780, 1814, 3560, 3628, 3827, 4535, 7256, 7654, 9070, 15308, 18140, 19135, 30616, 36280, 38270, 39001, 76540, 78002, 80723, 153080, 156004, 161446, 195005, 312008, 322892, 390010, 403615, 645784, 780020, 807230, 1560040, 1614460, 3228920, 3471089, 6942178, 13884356, 17355445, 27768712, 34710890, 69421780, 138843560]

約数ペア:

[(1, 138843560), (2, 69421780), (4, 34710890), (5, 27768712), (8, 17355445), (10, 13884356), (20, 6942178), (40, 3471089), (43, 3228920), (86, 1614460), (89, 1560040), (172, 807230), (178, 780020), (215, 645784), (344, 403615), (356, 390010), (430, 322892), (445, 312008), (712, 195005), (860, 161446), (890, 156004), (907, 153080), (1720, 80723), (1780, 78002), (1814, 76540), (3560, 39001), (3628, 38270), (3827, 36280), (4535, 30616), (7256, 19135), (7654, 18140), (9070, 15308)]