19389968

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1277}}^1$

素因数の和:1371

約数の個数: 40

約数和(自身を含む): 41044248

約数和(自身を除く): 21654280

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 73, 104, 146, 208, 292, 584, 949, 1168, 1277, 1898, 2554, 3796, 5108, 7592, 10216, 15184, 16601, 20432, 33202, 66404, 93221, 132808, 186442, 265616, 372884, 745768, 1211873, 1491536, 2423746, 4847492, 9694984, 19389968]

約数ペア:

[(1, 19389968), (2, 9694984), (4, 4847492), (8, 2423746), (13, 1491536), (16, 1211873), (26, 745768), (52, 372884), (73, 265616), (104, 186442), (146, 132808), (208, 93221), (292, 66404), (584, 33202), (949, 20432), (1168, 16601), (1277, 15184), (1898, 10216), (2554, 7592), (3796, 5108)]