66896720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4001}}^1$

素因数の和:4044

約数の個数: 80

約数和(自身を含む): 178649280

約数和(自身を除く): 111752560

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 38, 40, 44, 55, 76, 80, 88, 95, 110, 152, 176, 190, 209, 220, 304, 380, 418, 440, 760, 836, 880, 1045, 1520, 1672, 2090, 3344, 4001, 4180, 8002, 8360, 16004, 16720, 20005, 32008, 40010, 44011, 64016, 76019, 80020, 88022, 152038, 160040, 176044, 220055, 304076, 320080, 352088, 380095, 440110, 608152, 704176, 760190, 836209, 880220, 1216304, 1520380, 1672418, 1760440, 3040760, 3344836, 3520880, 4181045, 6081520, 6689672, 8362090, 13379344, 16724180, 33448360, 66896720]

約数ペア:

[(1, 66896720), (2, 33448360), (4, 16724180), (5, 13379344), (8, 8362090), (10, 6689672), (11, 6081520), (16, 4181045), (19, 3520880), (20, 3344836), (22, 3040760), (38, 1760440), (40, 1672418), (44, 1520380), (55, 1216304), (76, 880220), (80, 836209), (88, 760190), (95, 704176), (110, 608152), (152, 440110), (176, 380095), (190, 352088), (209, 320080), (220, 304076), (304, 220055), (380, 176044), (418, 160040), (440, 152038), (760, 88022), (836, 80020), (880, 76019), (1045, 64016), (1520, 44011), (1672, 40010), (2090, 32008), (3344, 20005), (4001, 16720), (4180, 16004), (8002, 8360)]