391244

素因数分解:

$2^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:257

約数の個数: 24

約数和(自身を含む): 796320

約数和(自身を除く): 405076

約数列:

[1, 2, 4, 7, 14, 28, 89, 157, 178, 314, 356, 623, 628, 1099, 1246, 2198, 2492, 4396, 13973, 27946, 55892, 97811, 195622, 391244]

約数ペア:

[(1, 391244), (2, 195622), (4, 97811), (7, 55892), (14, 27946), (28, 13973), (89, 4396), (157, 2492), (178, 2198), (314, 1246), (356, 1099), (623, 628)]