991499978

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1161007}}^1$

素因数の和:1161077

約数の個数: 16

約数和(自身を含む): 1727579904

約数和(自身を除く): 736079926

約数列:

[1, 2, 7, 14, 61, 122, 427, 854, 1161007, 2322014, 8127049, 16254098, 70821427, 141642854, 495749989, 991499978]

約数ペア:

[(1, 991499978), (2, 495749989), (7, 141642854), (14, 70821427), (61, 16254098), (122, 8127049), (427, 2322014), (854, 1161007)]