257942788

素因数分解:

$2^2\times {\mathrm{97}}^1\times {\mathrm{389}}^1\times {\mathrm{1709}}^1$

素因数の和:2199

約数の個数: 24

約数和(自身を含む): 457493400

約数和(自身を除く): 199550612

約数列:

[1, 2, 4, 97, 194, 388, 389, 778, 1556, 1709, 3418, 6836, 37733, 75466, 150932, 165773, 331546, 663092, 664801, 1329602, 2659204, 64485697, 128971394, 257942788]

約数ペア:

[(1, 257942788), (2, 128971394), (4, 64485697), (97, 2659204), (194, 1329602), (388, 664801), (389, 663092), (778, 331546), (1556, 165773), (1709, 150932), (3418, 75466), (6836, 37733)]