991235

素因数分解:

$5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{223}}^1$

素因数の和:362

約数の個数: 16

約数和(自身を含む): 1376256

約数和(自身を除く): 385021

約数列:

[1, 5, 7, 35, 127, 223, 635, 889, 1115, 1561, 4445, 7805, 28321, 141605, 198247, 991235]

約数ペア:

[(1, 991235), (5, 198247), (7, 141605), (35, 28321), (127, 7805), (223, 4445), (635, 1561), (889, 1115)]