20145694780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{277}}^1\times {\mathrm{51217}}^1$

素因数の和:51574

約数の個数: 48

約数和(自身を含む): 43057538496

約数和(自身を除く): 22911843716

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 277, 284, 355, 554, 710, 1108, 1385, 1420, 2770, 5540, 19667, 39334, 51217, 78668, 98335, 102434, 196670, 204868, 256085, 393340, 512170, 1024340, 3636407, 7272814, 14187109, 14545628, 18182035, 28374218, 36364070, 56748436, 70935545, 72728140, 141871090, 283742180, 1007284739, 2014569478, 4029138956, 5036423695, 10072847390, 20145694780]

約数ペア:

[(1, 20145694780), (2, 10072847390), (4, 5036423695), (5, 4029138956), (10, 2014569478), (20, 1007284739), (71, 283742180), (142, 141871090), (277, 72728140), (284, 70935545), (355, 56748436), (554, 36364070), (710, 28374218), (1108, 18182035), (1385, 14545628), (1420, 14187109), (2770, 7272814), (5540, 3636407), (19667, 1024340), (39334, 512170), (51217, 393340), (78668, 256085), (98335, 204868), (102434, 196670)]