28877380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{659}}^1$

素因数の和:988

約数の個数: 48

約数和(自身を含む): 69632640

約数和(自身を除く): 40755260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 313, 626, 659, 1252, 1318, 1565, 2191, 2636, 3130, 3295, 4382, 4613, 6260, 6590, 8764, 9226, 10955, 13180, 18452, 21910, 23065, 43820, 46130, 92260, 206267, 412534, 825068, 1031335, 1443869, 2062670, 2887738, 4125340, 5775476, 7219345, 14438690, 28877380]

約数ペア:

[(1, 28877380), (2, 14438690), (4, 7219345), (5, 5775476), (7, 4125340), (10, 2887738), (14, 2062670), (20, 1443869), (28, 1031335), (35, 825068), (70, 412534), (140, 206267), (313, 92260), (626, 46130), (659, 43820), (1252, 23065), (1318, 21910), (1565, 18452), (2191, 13180), (2636, 10955), (3130, 9226), (3295, 8764), (4382, 6590), (4613, 6260)]