138994996

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{503}}^1$

素因数の和:724

約数の個数: 48

約数和(自身を含む): 284497920

約数和(自身を除く): 145502924

約数列:

[1, 2, 4, 7, 14, 28, 71, 139, 142, 278, 284, 497, 503, 556, 973, 994, 1006, 1946, 1988, 2012, 3521, 3892, 7042, 9869, 14084, 19738, 35713, 39476, 69083, 69917, 71426, 138166, 139834, 142852, 249991, 276332, 279668, 489419, 499982, 978838, 999964, 1957676, 4964107, 9928214, 19856428, 34748749, 69497498, 138994996]

約数ペア:

[(1, 138994996), (2, 69497498), (4, 34748749), (7, 19856428), (14, 9928214), (28, 4964107), (71, 1957676), (139, 999964), (142, 978838), (278, 499982), (284, 489419), (497, 279668), (503, 276332), (556, 249991), (973, 142852), (994, 139834), (1006, 138166), (1946, 71426), (1988, 69917), (2012, 69083), (3521, 39476), (3892, 35713), (7042, 19738), (9869, 14084)]