208781660

素因数分解:

$2^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{257}}^1\times {\mathrm{269}}^1$

素因数の和:686

約数の個数: 48

約数和(自身を含む): 444709440

約数和(自身を除く): 235927780

約数列:

[1, 2, 4, 5, 10, 20, 151, 257, 269, 302, 514, 538, 604, 755, 1028, 1076, 1285, 1345, 1510, 2570, 2690, 3020, 5140, 5380, 38807, 40619, 69133, 77614, 81238, 138266, 155228, 162476, 194035, 203095, 276532, 345665, 388070, 406190, 691330, 776140, 812380, 1382660, 10439083, 20878166, 41756332, 52195415, 104390830, 208781660]

約数ペア:

[(1, 208781660), (2, 104390830), (4, 52195415), (5, 41756332), (10, 20878166), (20, 10439083), (151, 1382660), (257, 812380), (269, 776140), (302, 691330), (514, 406190), (538, 388070), (604, 345665), (755, 276532), (1028, 203095), (1076, 194035), (1285, 162476), (1345, 155228), (1510, 138266), (2570, 81238), (2690, 77614), (3020, 69133), (5140, 40619), (5380, 38807)]