28804840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16747}}^1$

素因数の和:16801

約数の個数: 32

約数和(自身を含む): 66322080

約数和(自身を除く): 37517240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 16747, 33494, 66988, 83735, 133976, 167470, 334940, 669880, 720121, 1440242, 2880484, 3600605, 5760968, 7201210, 14402420, 28804840]

約数ペア:

[(1, 28804840), (2, 14402420), (4, 7201210), (5, 5760968), (8, 3600605), (10, 2880484), (20, 1440242), (40, 720121), (43, 669880), (86, 334940), (172, 167470), (215, 133976), (344, 83735), (430, 66988), (860, 33494), (1720, 16747)]