65705720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{38201}}^1$

素因数の和:38255

約数の個数: 32

約数和(自身を含む): 151279920

約数和(自身を除く): 85574200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 38201, 76402, 152804, 191005, 305608, 382010, 764020, 1528040, 1642643, 3285286, 6570572, 8213215, 13141144, 16426430, 32852860, 65705720]

約数ペア:

[(1, 65705720), (2, 32852860), (4, 16426430), (5, 13141144), (8, 8213215), (10, 6570572), (20, 3285286), (40, 1642643), (43, 1528040), (86, 764020), (172, 382010), (215, 305608), (344, 191005), (430, 152804), (860, 76402), (1720, 38201)]