161809780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{17939}}^1$

素因数の和:18000

約数の個数: 48

約数和(自身を含む): 379753920

約数和(自身を除く): 217944140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 410, 451, 820, 902, 1804, 2255, 4510, 9020, 17939, 35878, 71756, 89695, 179390, 197329, 358780, 394658, 735499, 789316, 986645, 1470998, 1973290, 2941996, 3677495, 3946580, 7354990, 8090489, 14709980, 16180978, 32361956, 40452445, 80904890, 161809780]

約数ペア:

[(1, 161809780), (2, 80904890), (4, 40452445), (5, 32361956), (10, 16180978), (11, 14709980), (20, 8090489), (22, 7354990), (41, 3946580), (44, 3677495), (55, 2941996), (82, 1973290), (110, 1470998), (164, 986645), (205, 789316), (220, 735499), (410, 394658), (451, 358780), (820, 197329), (902, 179390), (1804, 89695), (2255, 71756), (4510, 35878), (9020, 17939)]