399448

素因数分解:

$2^3\times 7^2\times {\mathrm{1019}}^1$

素因数の和:1039

約数の個数: 24

約数和(自身を含む): 872100

約数和(自身を除く): 472652

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 1019, 2038, 4076, 7133, 8152, 14266, 28532, 49931, 57064, 99862, 199724, 399448]

約数ペア:

[(1, 399448), (2, 199724), (4, 99862), (7, 57064), (8, 49931), (14, 28532), (28, 14266), (49, 8152), (56, 7133), (98, 4076), (196, 2038), (392, 1019)]