256669168

素因数分解:

$2^4\times 7^1\times {\mathrm{73}}^1\times {\mathrm{31393}}^1$

素因数の和:31481

約数の個数: 40

約数和(自身を含む): 576142688

約数和(自身を除く): 319473520

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 73, 112, 146, 292, 511, 584, 1022, 1168, 2044, 4088, 8176, 31393, 62786, 125572, 219751, 251144, 439502, 502288, 879004, 1758008, 2291689, 3516016, 4583378, 9166756, 16041823, 18333512, 32083646, 36667024, 64167292, 128334584, 256669168]

約数ペア:

[(1, 256669168), (2, 128334584), (4, 64167292), (7, 36667024), (8, 32083646), (14, 18333512), (16, 16041823), (28, 9166756), (56, 4583378), (73, 3516016), (112, 2291689), (146, 1758008), (292, 879004), (511, 502288), (584, 439502), (1022, 251144), (1168, 219751), (2044, 125572), (4088, 62786), (8176, 31393)]