261987411

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{4271}}^1$

素因数の和:4431

約数の個数: 32

約数和(自身を含む): 419954688

約数和(自身を除く): 157967277

約数列:

[1, 3, 7, 21, 23, 69, 127, 161, 381, 483, 889, 2667, 2921, 4271, 8763, 12813, 20447, 29897, 61341, 89691, 98233, 294699, 542417, 687631, 1627251, 2062893, 3796919, 11390757, 12475591, 37426773, 87329137, 261987411]

約数ペア:

[(1, 261987411), (3, 87329137), (7, 37426773), (21, 12475591), (23, 11390757), (69, 3796919), (127, 2062893), (161, 1627251), (381, 687631), (483, 542417), (889, 294699), (2667, 98233), (2921, 89691), (4271, 61341), (8763, 29897), (12813, 20447)]