1991231478

素因数分解:

$2^1\times 3^3\times {\mathrm{197}}^1\times {\mathrm{187181}}^1$

素因数の和:187389

約数の個数: 32

約数和(自身を含む): 4447444320

約数和(自身を除く): 2456212842

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 197, 394, 591, 1182, 1773, 3546, 5319, 10638, 187181, 374362, 561543, 1123086, 1684629, 3369258, 5053887, 10107774, 36874657, 73749314, 110623971, 221247942, 331871913, 663743826, 995615739, 1991231478]

約数ペア:

[(1, 1991231478), (2, 995615739), (3, 663743826), (6, 331871913), (9, 221247942), (18, 110623971), (27, 73749314), (54, 36874657), (197, 10107774), (394, 5053887), (591, 3369258), (1182, 1684629), (1773, 1123086), (3546, 561543), (5319, 374362), (10638, 187181)]