21014800

素因数分解:

$2^4\times 5^2\times {\mathrm{107}}^1\times {\mathrm{491}}^1$

素因数の和:616

約数の個数: 60

約数和(自身を含む): 51063696

約数和(自身を除く): 30048896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 107, 200, 214, 400, 428, 491, 535, 856, 982, 1070, 1712, 1964, 2140, 2455, 2675, 3928, 4280, 4910, 5350, 7856, 8560, 9820, 10700, 12275, 19640, 21400, 24550, 39280, 42800, 49100, 52537, 98200, 105074, 196400, 210148, 262685, 420296, 525370, 840592, 1050740, 1313425, 2101480, 2626850, 4202960, 5253700, 10507400, 21014800]

約数ペア:

[(1, 21014800), (2, 10507400), (4, 5253700), (5, 4202960), (8, 2626850), (10, 2101480), (16, 1313425), (20, 1050740), (25, 840592), (40, 525370), (50, 420296), (80, 262685), (100, 210148), (107, 196400), (200, 105074), (214, 98200), (400, 52537), (428, 49100), (491, 42800), (535, 39280), (856, 24550), (982, 21400), (1070, 19640), (1712, 12275), (1964, 10700), (2140, 9820), (2455, 8560), (2675, 7856), (3928, 5350), (4280, 4910)]