28288840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16447}}^1$

素因数の和:16501

約数の個数: 32

約数和(自身を含む): 65134080

約数和(自身を除く): 36845240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 16447, 32894, 65788, 82235, 131576, 164470, 328940, 657880, 707221, 1414442, 2828884, 3536105, 5657768, 7072210, 14144420, 28288840]

約数ペア:

[(1, 28288840), (2, 14144420), (4, 7072210), (5, 5657768), (8, 3536105), (10, 2828884), (20, 1414442), (40, 707221), (43, 657880), (86, 328940), (172, 164470), (215, 131576), (344, 82235), (430, 65788), (860, 32894), (1720, 16447)]