81538490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{4909}}^1$

素因数の和:5078

約数の個数: 32

約数和(自身を含む): 161205120

約数和(自身を除く): 79666630

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 151, 302, 755, 1510, 1661, 3322, 4909, 8305, 9818, 16610, 24545, 49090, 53999, 107998, 269995, 539990, 741259, 1482518, 3706295, 7412590, 8153849, 16307698, 40769245, 81538490]

約数ペア:

[(1, 81538490), (2, 40769245), (5, 16307698), (10, 8153849), (11, 7412590), (22, 3706295), (55, 1482518), (110, 741259), (151, 539990), (302, 269995), (755, 107998), (1510, 53999), (1661, 49090), (3322, 24545), (4909, 16610), (8305, 9818)]