400908004

素因数分解:

$2^2\times 7^3\times {\mathrm{41}}^1\times {\mathrm{7127}}^1$

素因数の和:7193

約数の個数: 48

約数和(自身を含む): 838252800

約数和(自身を除く): 437344796

約数列:

[1, 2, 4, 7, 14, 28, 41, 49, 82, 98, 164, 196, 287, 343, 574, 686, 1148, 1372, 2009, 4018, 7127, 8036, 14063, 14254, 28126, 28508, 49889, 56252, 99778, 199556, 292207, 349223, 584414, 698446, 1168828, 1396892, 2045449, 2444561, 4090898, 4889122, 8181796, 9778244, 14318143, 28636286, 57272572, 100227001, 200454002, 400908004]

約数ペア:

[(1, 400908004), (2, 200454002), (4, 100227001), (7, 57272572), (14, 28636286), (28, 14318143), (41, 9778244), (49, 8181796), (82, 4889122), (98, 4090898), (164, 2444561), (196, 2045449), (287, 1396892), (343, 1168828), (574, 698446), (686, 584414), (1148, 349223), (1372, 292207), (2009, 199556), (4018, 99778), (7127, 56252), (8036, 49889), (14063, 28508), (14254, 28126)]