138419920

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{19441}}^1$

素因数の和:19543

約数の個数: 40

約数和(自身を含む): 325459080

約数和(自身を除く): 187039160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 19441, 38882, 77764, 97205, 155528, 194410, 311056, 388820, 777640, 1555280, 1730249, 3460498, 6920996, 8651245, 13841992, 17302490, 27683984, 34604980, 69209960, 138419920]

約数ペア:

[(1, 138419920), (2, 69209960), (4, 34604980), (5, 27683984), (8, 17302490), (10, 13841992), (16, 8651245), (20, 6920996), (40, 3460498), (80, 1730249), (89, 1555280), (178, 777640), (356, 388820), (445, 311056), (712, 194410), (890, 155528), (1424, 97205), (1780, 77764), (3560, 38882), (7120, 19441)]