199349720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{115901}}^1$

素因数の和:115955

約数の個数: 32

約数和(自身を含む): 458971920

約数和(自身を除く): 259622200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 115901, 231802, 463604, 579505, 927208, 1159010, 2318020, 4636040, 4983743, 9967486, 19934972, 24918715, 39869944, 49837430, 99674860, 199349720]

約数ペア:

[(1, 199349720), (2, 99674860), (4, 49837430), (5, 39869944), (8, 24918715), (10, 19934972), (20, 9967486), (40, 4983743), (43, 4636040), (86, 2318020), (172, 1159010), (215, 927208), (344, 579505), (430, 463604), (860, 231802), (1720, 115901)]