1290877360

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{181303}}^1$

素因数の和:181405

約数の個数: 40

約数和(自身を含む): 3035028960

約数和(自身を除く): 1744151600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 181303, 362606, 725212, 906515, 1450424, 1813030, 2900848, 3626060, 7252120, 14504240, 16135967, 32271934, 64543868, 80679835, 129087736, 161359670, 258175472, 322719340, 645438680, 1290877360]

約数ペア:

[(1, 1290877360), (2, 645438680), (4, 322719340), (5, 258175472), (8, 161359670), (10, 129087736), (16, 80679835), (20, 64543868), (40, 32271934), (80, 16135967), (89, 14504240), (178, 7252120), (356, 3626060), (445, 2900848), (712, 1813030), (890, 1450424), (1424, 906515), (1780, 725212), (3560, 362606), (7120, 181303)]