81459716

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{2143}}^1$

素因数の和:2220

約数の個数: 48

約数和(自身を含む): 166408704

約数和(自身を除く): 84948988

約数列:

[1, 2, 4, 13, 17, 26, 34, 43, 52, 68, 86, 172, 221, 442, 559, 731, 884, 1118, 1462, 2143, 2236, 2924, 4286, 8572, 9503, 19006, 27859, 36431, 38012, 55718, 72862, 92149, 111436, 145724, 184298, 368596, 473603, 947206, 1197937, 1566533, 1894412, 2395874, 3133066, 4791748, 6266132, 20364929, 40729858, 81459716]

約数ペア:

[(1, 81459716), (2, 40729858), (4, 20364929), (13, 6266132), (17, 4791748), (26, 3133066), (34, 2395874), (43, 1894412), (52, 1566533), (68, 1197937), (86, 947206), (172, 473603), (221, 368596), (442, 184298), (559, 145724), (731, 111436), (884, 92149), (1118, 72862), (1462, 55718), (2143, 38012), (2236, 36431), (2924, 27859), (4286, 19006), (8572, 9503)]