18969388

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 36578304

約数和(自身を除く): 17608916

約数列:

[1, 2, 4, 23, 41, 46, 47, 82, 92, 94, 107, 164, 188, 214, 428, 943, 1081, 1886, 1927, 2162, 2461, 3772, 3854, 4324, 4387, 4922, 5029, 7708, 8774, 9844, 10058, 17548, 20116, 44321, 88642, 100901, 115667, 177284, 201802, 206189, 231334, 403604, 412378, 462668, 824756, 4742347, 9484694, 18969388]

約数ペア:

[(1, 18969388), (2, 9484694), (4, 4742347), (23, 824756), (41, 462668), (46, 412378), (47, 403604), (82, 231334), (92, 206189), (94, 201802), (107, 177284), (164, 115667), (188, 100901), (214, 88642), (428, 44321), (943, 20116), (1081, 17548), (1886, 10058), (1927, 9844), (2162, 8774), (2461, 7708), (3772, 5029), (3854, 4922), (4324, 4387)]