66128840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{38447}}^1$

素因数の和:38501

約数の個数: 32

約数和(自身を含む): 152254080

約数和(自身を除く): 86125240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 38447, 76894, 153788, 192235, 307576, 384470, 768940, 1537880, 1653221, 3306442, 6612884, 8266105, 13225768, 16532210, 33064420, 66128840]

約数ペア:

[(1, 66128840), (2, 33064420), (4, 16532210), (5, 13225768), (8, 8266105), (10, 6612884), (20, 3306442), (40, 1653221), (43, 1537880), (86, 768940), (172, 384470), (215, 307576), (344, 192235), (430, 153788), (860, 76894), (1720, 38447)]