1720180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1117}}^1$

素因数の和:1144

約数の個数: 48

約数和(自身を含む): 4507776

約数和(自身を除く): 2787596

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1117, 1540, 2234, 4468, 5585, 7819, 11170, 12287, 15638, 22340, 24574, 31276, 39095, 49148, 61435, 78190, 86009, 122870, 156380, 172018, 245740, 344036, 430045, 860090, 1720180]

約数ペア:

[(1, 1720180), (2, 860090), (4, 430045), (5, 344036), (7, 245740), (10, 172018), (11, 156380), (14, 122870), (20, 86009), (22, 78190), (28, 61435), (35, 49148), (44, 39095), (55, 31276), (70, 24574), (77, 22340), (110, 15638), (140, 12287), (154, 11170), (220, 7819), (308, 5585), (385, 4468), (770, 2234), (1117, 1540)]