256676

素因数分解:

$2^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:203

約数の個数: 24

約数和(自身を含む): 524160

約数和(自身を除く): 267484

約数列:

[1, 2, 4, 7, 14, 28, 89, 103, 178, 206, 356, 412, 623, 721, 1246, 1442, 2492, 2884, 9167, 18334, 36668, 64169, 128338, 256676]

約数ペア:

[(1, 256676), (2, 128338), (4, 64169), (7, 36668), (14, 18334), (28, 9167), (89, 2884), (103, 2492), (178, 1442), (206, 1246), (356, 721), (412, 623)]