278330661

素因数分解:

$3^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{16927}}^1$

素因数の和:16975

約数の個数: 40

約数和(自身を含む): 491589120

約数和(自身を除く): 213258459

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 81, 87, 189, 203, 261, 567, 609, 783, 1827, 2349, 5481, 16443, 16927, 50781, 118489, 152343, 355467, 457029, 490883, 1066401, 1371087, 1472649, 3199203, 3436181, 4417947, 9597609, 10308543, 13253841, 30925629, 39761523, 92776887, 278330661]

約数ペア:

[(1, 278330661), (3, 92776887), (7, 39761523), (9, 30925629), (21, 13253841), (27, 10308543), (29, 9597609), (63, 4417947), (81, 3436181), (87, 3199203), (189, 1472649), (203, 1371087), (261, 1066401), (567, 490883), (609, 457029), (783, 355467), (1827, 152343), (2349, 118489), (5481, 50781), (16443, 16927)]