31090780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1621}}^1$

素因数の和:1774

約数の個数: 48

約数和(自身を含む): 75208896

約数和(自身を除く): 44118116

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 137, 140, 274, 548, 685, 959, 1370, 1621, 1918, 2740, 3242, 3836, 4795, 6484, 8105, 9590, 11347, 16210, 19180, 22694, 32420, 45388, 56735, 113470, 222077, 226940, 444154, 888308, 1110385, 1554539, 2220770, 3109078, 4441540, 6218156, 7772695, 15545390, 31090780]

約数ペア:

[(1, 31090780), (2, 15545390), (4, 7772695), (5, 6218156), (7, 4441540), (10, 3109078), (14, 2220770), (20, 1554539), (28, 1110385), (35, 888308), (70, 444154), (137, 226940), (140, 222077), (274, 113470), (548, 56735), (685, 45388), (959, 32420), (1370, 22694), (1621, 19180), (1918, 16210), (2740, 11347), (3242, 9590), (3836, 8105), (4795, 6484)]