21217190

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{911}}^1$

素因数の和:1072

約数の個数: 32

約数和(自身を含む): 40777344

約数和(自身を除く): 19560154

約数列:

[1, 2, 5, 10, 17, 34, 85, 137, 170, 274, 685, 911, 1370, 1822, 2329, 4555, 4658, 9110, 11645, 15487, 23290, 30974, 77435, 124807, 154870, 249614, 624035, 1248070, 2121719, 4243438, 10608595, 21217190]

約数ペア:

[(1, 21217190), (2, 10608595), (5, 4243438), (10, 2121719), (17, 1248070), (34, 624035), (85, 249614), (137, 154870), (170, 124807), (274, 77435), (685, 30974), (911, 23290), (1370, 15487), (1822, 11645), (2329, 9110), (4555, 4658)]