1256552680

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{197}}^1\times {\mathrm{881}}^1$

素因数の和:1270

約数の個数: 64

約数和(自身を含む): 2860537680

約数和(自身を除く): 1603985000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 197, 362, 394, 724, 788, 881, 905, 985, 1448, 1576, 1762, 1810, 1970, 3524, 3620, 3940, 4405, 7048, 7240, 7880, 8810, 17620, 35240, 35657, 71314, 142628, 159461, 173557, 178285, 285256, 318922, 347114, 356570, 637844, 694228, 713140, 797305, 867785, 1275688, 1388456, 1426280, 1594610, 1735570, 3189220, 3471140, 6378440, 6942280, 31413817, 62827634, 125655268, 157069085, 251310536, 314138170, 628276340, 1256552680]

約数ペア:

[(1, 1256552680), (2, 628276340), (4, 314138170), (5, 251310536), (8, 157069085), (10, 125655268), (20, 62827634), (40, 31413817), (181, 6942280), (197, 6378440), (362, 3471140), (394, 3189220), (724, 1735570), (788, 1594610), (881, 1426280), (905, 1388456), (985, 1275688), (1448, 867785), (1576, 797305), (1762, 713140), (1810, 694228), (1970, 637844), (3524, 356570), (3620, 347114), (3940, 318922), (4405, 285256), (7048, 178285), (7240, 173557), (7880, 159461), (8810, 142628), (17620, 71314), (35240, 35657)]