77781328

素因数分解:

$2^4\times {\mathrm{389}}^1\times {\mathrm{12497}}^1$

素因数の和:12894

約数の個数: 20

約数和(自身を含む): 151100820

約数和(自身を除く): 73319492

約数列:

[1, 2, 4, 8, 16, 389, 778, 1556, 3112, 6224, 12497, 24994, 49988, 99976, 199952, 4861333, 9722666, 19445332, 38890664, 77781328]

約数ペア:

[(1, 77781328), (2, 38890664), (4, 19445332), (8, 9722666), (16, 4861333), (389, 199952), (778, 99976), (1556, 49988), (3112, 24994), (6224, 12497)]