257331651

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1\times {\mathrm{281}}^1$

素因数の和:587

約数の個数: 32

約数和(自身を含む): 365291520

約数和(自身を除く): 107959869

約数列:

[1, 3, 31, 43, 93, 129, 229, 281, 687, 843, 1333, 3999, 7099, 8711, 9847, 12083, 21297, 26133, 29541, 36249, 64349, 193047, 305257, 374573, 915771, 1123719, 1994819, 2767007, 5984457, 8301021, 85777217, 257331651]

約数ペア:

[(1, 257331651), (3, 85777217), (31, 8301021), (43, 5984457), (93, 2767007), (129, 1994819), (229, 1123719), (281, 915771), (687, 374573), (843, 305257), (1333, 193047), (3999, 64349), (7099, 36249), (8711, 29541), (9847, 26133), (12083, 21297)]