20168240

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1$

素因数の和:246

約数の個数: 80

約数和(自身を含む): 49871808

約数和(自身を除く): 29703568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 97, 113, 115, 184, 194, 226, 230, 368, 388, 452, 460, 485, 565, 776, 904, 920, 970, 1130, 1552, 1808, 1840, 1940, 2231, 2260, 2599, 3880, 4462, 4520, 5198, 7760, 8924, 9040, 10396, 10961, 11155, 12995, 17848, 20792, 21922, 22310, 25990, 35696, 41584, 43844, 44620, 51980, 54805, 87688, 89240, 103960, 109610, 175376, 178480, 207920, 219220, 252103, 438440, 504206, 876880, 1008412, 1260515, 2016824, 2521030, 4033648, 5042060, 10084120, 20168240]

約数ペア:

[(1, 20168240), (2, 10084120), (4, 5042060), (5, 4033648), (8, 2521030), (10, 2016824), (16, 1260515), (20, 1008412), (23, 876880), (40, 504206), (46, 438440), (80, 252103), (92, 219220), (97, 207920), (113, 178480), (115, 175376), (184, 109610), (194, 103960), (226, 89240), (230, 87688), (368, 54805), (388, 51980), (452, 44620), (460, 43844), (485, 41584), (565, 35696), (776, 25990), (904, 22310), (920, 21922), (970, 20792), (1130, 17848), (1552, 12995), (1808, 11155), (1840, 10961), (1940, 10396), (2231, 9040), (2260, 8924), (2599, 7760), (3880, 5198), (4462, 4520)]