161682020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{3061}}^1$

素因数の和:3228

約数の個数: 48

約数和(自身を含む): 360091200

約数和(自身を除く): 198409180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 139, 190, 278, 380, 556, 695, 1390, 2641, 2780, 3061, 5282, 6122, 10564, 12244, 13205, 15305, 26410, 30610, 52820, 58159, 61220, 116318, 232636, 290795, 425479, 581590, 850958, 1163180, 1701916, 2127395, 4254790, 8084101, 8509580, 16168202, 32336404, 40420505, 80841010, 161682020]

約数ペア:

[(1, 161682020), (2, 80841010), (4, 40420505), (5, 32336404), (10, 16168202), (19, 8509580), (20, 8084101), (38, 4254790), (76, 2127395), (95, 1701916), (139, 1163180), (190, 850958), (278, 581590), (380, 425479), (556, 290795), (695, 232636), (1390, 116318), (2641, 61220), (2780, 58159), (3061, 52820), (5282, 30610), (6122, 26410), (10564, 15305), (12244, 13205)]