15720800

素因数分解:

$2^5\times 5^2\times {\mathrm{43}}^1\times {\mathrm{457}}^1$

素因数の和:520

約数の個数: 72

約数和(自身を含む): 39356856

約数和(自身を除く): 23636056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 43, 50, 80, 86, 100, 160, 172, 200, 215, 344, 400, 430, 457, 688, 800, 860, 914, 1075, 1376, 1720, 1828, 2150, 2285, 3440, 3656, 4300, 4570, 6880, 7312, 8600, 9140, 11425, 14624, 17200, 18280, 19651, 22850, 34400, 36560, 39302, 45700, 73120, 78604, 91400, 98255, 157208, 182800, 196510, 314416, 365600, 393020, 491275, 628832, 786040, 982550, 1572080, 1965100, 3144160, 3930200, 7860400, 15720800]

約数ペア:

[(1, 15720800), (2, 7860400), (4, 3930200), (5, 3144160), (8, 1965100), (10, 1572080), (16, 982550), (20, 786040), (25, 628832), (32, 491275), (40, 393020), (43, 365600), (50, 314416), (80, 196510), (86, 182800), (100, 157208), (160, 98255), (172, 91400), (200, 78604), (215, 73120), (344, 45700), (400, 39302), (430, 36560), (457, 34400), (688, 22850), (800, 19651), (860, 18280), (914, 17200), (1075, 14624), (1376, 11425), (1720, 9140), (1828, 8600), (2150, 7312), (2285, 6880), (3440, 4570), (3656, 4300)]