399654248

素因数分解:

$2^3\times 7^1\times {\mathrm{251}}^1\times {\mathrm{28433}}^1$

素因数の和:28697

約数の個数: 32

約数和(自身を含む): 859844160

約数和(自身を除く): 460189912

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 251, 502, 1004, 1757, 2008, 3514, 7028, 14056, 28433, 56866, 113732, 199031, 227464, 398062, 796124, 1592248, 7136683, 14273366, 28546732, 49956781, 57093464, 99913562, 199827124, 399654248]

約数ペア:

[(1, 399654248), (2, 199827124), (4, 99913562), (7, 57093464), (8, 49956781), (14, 28546732), (28, 14273366), (56, 7136683), (251, 1592248), (502, 796124), (1004, 398062), (1757, 227464), (2008, 199031), (3514, 113732), (7028, 56866), (14056, 28433)]