5181580

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 11430720

約数和(自身を除く): 6249140

約数列:

[1, 2, 4, 5, 10, 20, 41, 71, 82, 89, 142, 164, 178, 205, 284, 355, 356, 410, 445, 710, 820, 890, 1420, 1780, 2911, 3649, 5822, 6319, 7298, 11644, 12638, 14555, 14596, 18245, 25276, 29110, 31595, 36490, 58220, 63190, 72980, 126380, 259079, 518158, 1036316, 1295395, 2590790, 5181580]

約数ペア:

[(1, 5181580), (2, 2590790), (4, 1295395), (5, 1036316), (10, 518158), (20, 259079), (41, 126380), (71, 72980), (82, 63190), (89, 58220), (142, 36490), (164, 31595), (178, 29110), (205, 25276), (284, 18245), (355, 14596), (356, 14555), (410, 12638), (445, 11644), (710, 7298), (820, 6319), (890, 5822), (1420, 3649), (1780, 2911)]