89280040

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{51907}}^1$

素因数の和:51961

約数の個数: 32

約数和(自身を含む): 205555680

約数和(自身を除く): 116275640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 51907, 103814, 207628, 259535, 415256, 519070, 1038140, 2076280, 2232001, 4464002, 8928004, 11160005, 17856008, 22320010, 44640020, 89280040]

約数ペア:

[(1, 89280040), (2, 44640020), (4, 22320010), (5, 17856008), (8, 11160005), (10, 8928004), (20, 4464002), (40, 2232001), (43, 2076280), (86, 1038140), (172, 519070), (215, 415256), (344, 259535), (430, 207628), (860, 103814), (1720, 51907)]