81940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{241}}^1$

素因数の和:267

約数の個数: 24

約数和(自身を含む): 182952

約数和(自身を除く): 101012

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 241, 340, 482, 964, 1205, 2410, 4097, 4820, 8194, 16388, 20485, 40970, 81940]

約数ペア:

[(1, 81940), (2, 40970), (4, 20485), (5, 16388), (10, 8194), (17, 4820), (20, 4097), (34, 2410), (68, 1205), (85, 964), (170, 482), (241, 340)]