645904

素因数分解:

$2^4\times 7^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:167

約数の個数: 40

約数和(自身を含む): 1468160

約数和(自身を除く): 822256

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 73, 79, 112, 146, 158, 292, 316, 511, 553, 584, 632, 1022, 1106, 1168, 1264, 2044, 2212, 4088, 4424, 5767, 8176, 8848, 11534, 23068, 40369, 46136, 80738, 92272, 161476, 322952, 645904]

約数ペア:

[(1, 645904), (2, 322952), (4, 161476), (7, 92272), (8, 80738), (14, 46136), (16, 40369), (28, 23068), (56, 11534), (73, 8848), (79, 8176), (112, 5767), (146, 4424), (158, 4088), (292, 2212), (316, 2044), (511, 1264), (553, 1168), (584, 1106), (632, 1022)]