278869780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{284561}}^1$

素因数の和:284584

約数の個数: 36

約数和(自身を含む): 681241428

約数和(自身を除く): 402371648

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 284561, 569122, 1138244, 1422805, 1991927, 2845610, 3983854, 5691220, 7967708, 9959635, 13943489, 19919270, 27886978, 39838540, 55773956, 69717445, 139434890, 278869780]

約数ペア:

[(1, 278869780), (2, 139434890), (4, 69717445), (5, 55773956), (7, 39838540), (10, 27886978), (14, 19919270), (20, 13943489), (28, 9959635), (35, 7967708), (49, 5691220), (70, 3983854), (98, 2845610), (140, 1991927), (196, 1422805), (245, 1138244), (490, 569122), (980, 284561)]