431720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 997920

約数和(自身を除く): 566200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 251, 344, 430, 502, 860, 1004, 1255, 1720, 2008, 2510, 5020, 10040, 10793, 21586, 43172, 53965, 86344, 107930, 215860, 431720]

約数ペア:

[(1, 431720), (2, 215860), (4, 107930), (5, 86344), (8, 53965), (10, 43172), (20, 21586), (40, 10793), (43, 10040), (86, 5020), (172, 2510), (215, 2008), (251, 1720), (344, 1255), (430, 1004), (502, 860)]