21962500

素因数分解:

$2^2\times 5^5\times 7^1\times {\mathrm{251}}^1$

素因数の和:287

約数の個数: 72

約数和(自身を含む): 55121472

約数和(自身を除く): 33158972

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 125, 140, 175, 250, 251, 350, 500, 502, 625, 700, 875, 1004, 1250, 1255, 1750, 1757, 2500, 2510, 3125, 3500, 3514, 4375, 5020, 6250, 6275, 7028, 8750, 8785, 12500, 12550, 17500, 17570, 21875, 25100, 31375, 35140, 43750, 43925, 62750, 87500, 87850, 125500, 156875, 175700, 219625, 313750, 439250, 627500, 784375, 878500, 1098125, 1568750, 2196250, 3137500, 4392500, 5490625, 10981250, 21962500]

約数ペア:

[(1, 21962500), (2, 10981250), (4, 5490625), (5, 4392500), (7, 3137500), (10, 2196250), (14, 1568750), (20, 1098125), (25, 878500), (28, 784375), (35, 627500), (50, 439250), (70, 313750), (100, 219625), (125, 175700), (140, 156875), (175, 125500), (250, 87850), (251, 87500), (350, 62750), (500, 43925), (502, 43750), (625, 35140), (700, 31375), (875, 25100), (1004, 21875), (1250, 17570), (1255, 17500), (1750, 12550), (1757, 12500), (2500, 8785), (2510, 8750), (3125, 7028), (3500, 6275), (3514, 6250), (4375, 5020)]