28280240

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8221}}^1$

素因数の和:8277

約数の個数: 40

約数和(自身を含む): 67288848

約数和(自身を除く): 39008608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 8221, 16442, 32884, 41105, 65768, 82210, 131536, 164420, 328840, 353503, 657680, 707006, 1414012, 1767515, 2828024, 3535030, 5656048, 7070060, 14140120, 28280240]

約数ペア:

[(1, 28280240), (2, 14140120), (4, 7070060), (5, 5656048), (8, 3535030), (10, 2828024), (16, 1767515), (20, 1414012), (40, 707006), (43, 657680), (80, 353503), (86, 328840), (172, 164420), (215, 131536), (344, 82210), (430, 65768), (688, 41105), (860, 32884), (1720, 16442), (3440, 8221)]