19704836

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{293}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 39118464

約数和(自身を除く): 19413628

約数列:

[1, 2, 4, 17, 23, 34, 43, 46, 68, 86, 92, 172, 293, 391, 586, 731, 782, 989, 1172, 1462, 1564, 1978, 2924, 3956, 4981, 6739, 9962, 12599, 13478, 16813, 19924, 25198, 26956, 33626, 50396, 67252, 114563, 214183, 229126, 289777, 428366, 458252, 579554, 856732, 1159108, 4926209, 9852418, 19704836]

約数ペア:

[(1, 19704836), (2, 9852418), (4, 4926209), (17, 1159108), (23, 856732), (34, 579554), (43, 458252), (46, 428366), (68, 289777), (86, 229126), (92, 214183), (172, 114563), (293, 67252), (391, 50396), (586, 33626), (731, 26956), (782, 25198), (989, 19924), (1172, 16813), (1462, 13478), (1564, 12599), (1978, 9962), (2924, 6739), (3956, 4981)]