617540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{401}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 1620864

約数和(自身を除く): 1003324

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, 401, 770, 802, 1540, 1604, 2005, 2807, 4010, 4411, 5614, 8020, 8822, 11228, 14035, 17644, 22055, 28070, 30877, 44110, 56140, 61754, 88220, 123508, 154385, 308770, 617540]

約数ペア:

[(1, 617540), (2, 308770), (4, 154385), (5, 123508), (7, 88220), (10, 61754), (11, 56140), (14, 44110), (20, 30877), (22, 28070), (28, 22055), (35, 17644), (44, 14035), (55, 11228), (70, 8822), (77, 8020), (110, 5614), (140, 4411), (154, 4010), (220, 2807), (308, 2005), (385, 1604), (401, 1540), (770, 802)]