20861698

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:251

約数の個数: 48

約数和(自身を含む): 38368512

約数和(自身を除く): 17506814

約数列:

[1, 2, 11, 13, 22, 26, 31, 62, 143, 169, 181, 286, 338, 341, 362, 403, 682, 806, 1859, 1991, 2353, 3718, 3982, 4433, 4706, 5239, 5611, 8866, 10478, 11222, 25883, 30589, 51766, 57629, 61178, 61721, 72943, 115258, 123442, 145886, 336479, 672958, 802373, 948259, 1604746, 1896518, 10430849, 20861698]

約数ペア:

[(1, 20861698), (2, 10430849), (11, 1896518), (13, 1604746), (22, 948259), (26, 802373), (31, 672958), (62, 336479), (143, 145886), (169, 123442), (181, 115258), (286, 72943), (338, 61721), (341, 61178), (362, 57629), (403, 51766), (682, 30589), (806, 25883), (1859, 11222), (1991, 10478), (2353, 8866), (3718, 5611), (3982, 5239), (4433, 4706)]