81290258

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{1129}}^1$

素因数の和:1314

約数の個数: 32

約数和(自身を含む): 144278400

約数和(自身を除く): 62988142

約数列:

[1, 2, 7, 14, 37, 74, 139, 259, 278, 518, 973, 1129, 1946, 2258, 5143, 7903, 10286, 15806, 36001, 41773, 72002, 83546, 156931, 292411, 313862, 584822, 1098517, 2197034, 5806447, 11612894, 40645129, 81290258]

約数ペア:

[(1, 81290258), (2, 40645129), (7, 11612894), (14, 5806447), (37, 2197034), (74, 1098517), (139, 584822), (259, 313862), (278, 292411), (518, 156931), (973, 83546), (1129, 72002), (1946, 41773), (2258, 36001), (5143, 15806), (7903, 10286)]