257173688

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{21247}}^1$

素因数の和:21359

約数の個数: 32

約数和(自身を含む): 516326400

約数和(自身を除く): 259152712

約数列:

[1, 2, 4, 8, 17, 34, 68, 89, 136, 178, 356, 712, 1513, 3026, 6052, 12104, 21247, 42494, 84988, 169976, 361199, 722398, 1444796, 1890983, 2889592, 3781966, 7563932, 15127864, 32146711, 64293422, 128586844, 257173688]

約数ペア:

[(1, 257173688), (2, 128586844), (4, 64293422), (8, 32146711), (17, 15127864), (34, 7563932), (68, 3781966), (89, 2889592), (136, 1890983), (178, 1444796), (356, 722398), (712, 361199), (1513, 169976), (3026, 84988), (6052, 42494), (12104, 21247)]