399728

素因数分解:

$2^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:141

約数の個数: 40

約数和(自身を含む): 916608

約数和(自身を除く): 516880

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 43, 56, 83, 86, 112, 166, 172, 301, 332, 344, 581, 602, 664, 688, 1162, 1204, 1328, 2324, 2408, 3569, 4648, 4816, 7138, 9296, 14276, 24983, 28552, 49966, 57104, 99932, 199864, 399728]

約数ペア:

[(1, 399728), (2, 199864), (4, 99932), (7, 57104), (8, 49966), (14, 28552), (16, 24983), (28, 14276), (43, 9296), (56, 7138), (83, 4816), (86, 4648), (112, 3569), (166, 2408), (172, 2324), (301, 1328), (332, 1204), (344, 1162), (581, 688), (602, 664)]