640407208

素因数分解:

$2^3\times 7^1\times {\mathrm{41}}^2\times {\mathrm{6803}}^1$

素因数の和:6898

約数の個数: 48

約数和(自身を含む): 1406795040

約数和(自身を除く): 766387832

約数列:

[1, 2, 4, 7, 8, 14, 28, 41, 56, 82, 164, 287, 328, 574, 1148, 1681, 2296, 3362, 6724, 6803, 11767, 13448, 13606, 23534, 27212, 47068, 47621, 54424, 94136, 95242, 190484, 278923, 380968, 557846, 1115692, 1952461, 2231384, 3904922, 7809844, 11435843, 15619688, 22871686, 45743372, 80050901, 91486744, 160101802, 320203604, 640407208]

約数ペア:

[(1, 640407208), (2, 320203604), (4, 160101802), (7, 91486744), (8, 80050901), (14, 45743372), (28, 22871686), (41, 15619688), (56, 11435843), (82, 7809844), (164, 3904922), (287, 2231384), (328, 1952461), (574, 1115692), (1148, 557846), (1681, 380968), (2296, 278923), (3362, 190484), (6724, 95242), (6803, 94136), (11767, 54424), (13448, 47621), (13606, 47068), (23534, 27212)]