278315541

素因数分解:

$3^3\times 7^2\times {\mathrm{211}}^1\times {\mathrm{997}}^1$

素因数の和:1231

約数の個数: 48

約数和(自身を含む): 482393280

約数和(自身を除く): 204077739

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 211, 441, 633, 997, 1323, 1477, 1899, 2991, 4431, 5697, 6979, 8973, 10339, 13293, 20937, 26919, 31017, 39879, 48853, 62811, 93051, 146559, 188433, 210367, 279153, 439677, 631101, 1319031, 1472569, 1893303, 4417707, 5679909, 10307983, 13253121, 30923949, 39759363, 92771847, 278315541]

約数ペア:

[(1, 278315541), (3, 92771847), (7, 39759363), (9, 30923949), (21, 13253121), (27, 10307983), (49, 5679909), (63, 4417707), (147, 1893303), (189, 1472569), (211, 1319031), (441, 631101), (633, 439677), (997, 279153), (1323, 210367), (1477, 188433), (1899, 146559), (2991, 93051), (4431, 62811), (5697, 48853), (6979, 39879), (8973, 31017), (10339, 26919), (13293, 20937)]