81463220

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{1097}}^1$

素因数の和:1232

約数の個数: 48

約数和(自身を含む): 177085440

約数和(自身を除く): 95622220

約数列:

[1, 2, 4, 5, 10, 20, 47, 79, 94, 158, 188, 235, 316, 395, 470, 790, 940, 1097, 1580, 2194, 3713, 4388, 5485, 7426, 10970, 14852, 18565, 21940, 37130, 51559, 74260, 86663, 103118, 173326, 206236, 257795, 346652, 433315, 515590, 866630, 1031180, 1733260, 4073161, 8146322, 16292644, 20365805, 40731610, 81463220]

約数ペア:

[(1, 81463220), (2, 40731610), (4, 20365805), (5, 16292644), (10, 8146322), (20, 4073161), (47, 1733260), (79, 1031180), (94, 866630), (158, 515590), (188, 433315), (235, 346652), (316, 257795), (395, 206236), (470, 173326), (790, 103118), (940, 86663), (1097, 74260), (1580, 51559), (2194, 37130), (3713, 21940), (4388, 18565), (5485, 14852), (7426, 10970)]