131371120

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{18451}}^1$

素因数の和:18553

約数の個数: 40

約数和(自身を含む): 308886480

約数和(自身を除く): 177515360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 18451, 36902, 73804, 92255, 147608, 184510, 295216, 369020, 738040, 1476080, 1642139, 3284278, 6568556, 8210695, 13137112, 16421390, 26274224, 32842780, 65685560, 131371120]

約数ペア:

[(1, 131371120), (2, 65685560), (4, 32842780), (5, 26274224), (8, 16421390), (10, 13137112), (16, 8210695), (20, 6568556), (40, 3284278), (80, 1642139), (89, 1476080), (178, 738040), (356, 369020), (445, 295216), (712, 184510), (890, 147608), (1424, 92255), (1780, 73804), (3560, 36902), (7120, 18451)]