201671720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{117251}}^1$

素因数の和:117305

約数の個数: 32

約数和(自身を含む): 464317920

約数和(自身を除く): 262646200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 117251, 234502, 469004, 586255, 938008, 1172510, 2345020, 4690040, 5041793, 10083586, 20167172, 25208965, 40334344, 50417930, 100835860, 201671720]

約数ペア:

[(1, 201671720), (2, 100835860), (4, 50417930), (5, 40334344), (8, 25208965), (10, 20167172), (20, 10083586), (40, 5041793), (43, 4690040), (86, 2345020), (172, 1172510), (215, 938008), (344, 586255), (430, 469004), (860, 234502), (1720, 117251)]