278301340

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{263}}^1\times {\mathrm{337}}^1$

素因数の和:766

約数の個数: 48

約数和(自身を含む): 592143552

約数和(自身を除く): 313842212

約数列:

[1, 2, 4, 5, 10, 20, 157, 263, 314, 337, 526, 628, 674, 785, 1052, 1315, 1348, 1570, 1685, 2630, 3140, 3370, 5260, 6740, 41291, 52909, 82582, 88631, 105818, 165164, 177262, 206455, 211636, 264545, 354524, 412910, 443155, 529090, 825820, 886310, 1058180, 1772620, 13915067, 27830134, 55660268, 69575335, 139150670, 278301340]

約数ペア:

[(1, 278301340), (2, 139150670), (4, 69575335), (5, 55660268), (10, 27830134), (20, 13915067), (157, 1772620), (263, 1058180), (314, 886310), (337, 825820), (526, 529090), (628, 443155), (674, 412910), (785, 354524), (1052, 264545), (1315, 211636), (1348, 206455), (1570, 177262), (1685, 165164), (2630, 105818), (3140, 88631), (3370, 82582), (5260, 52909), (6740, 41291)]