1117840

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:259

約数の個数: 40

約数和(自身を含む): 2644920

約数和(自身を除く): 1527080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 157, 178, 314, 356, 445, 628, 712, 785, 890, 1256, 1424, 1570, 1780, 2512, 3140, 3560, 6280, 7120, 12560, 13973, 27946, 55892, 69865, 111784, 139730, 223568, 279460, 558920, 1117840]

約数ペア:

[(1, 1117840), (2, 558920), (4, 279460), (5, 223568), (8, 139730), (10, 111784), (16, 69865), (20, 55892), (40, 27946), (80, 13973), (89, 12560), (157, 7120), (178, 6280), (314, 3560), (356, 3140), (445, 2512), (628, 1780), (712, 1570), (785, 1424), (890, 1256)]