21520310

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{1187}}^1$

素因数の和:1245

約数の個数: 48

約数和(自身を含む): 46317744

約数和(自身を除く): 24797434

約数列:

[1, 2, 5, 7, 10, 14, 35, 37, 49, 70, 74, 98, 185, 245, 259, 370, 490, 518, 1187, 1295, 1813, 2374, 2590, 3626, 5935, 8309, 9065, 11870, 16618, 18130, 41545, 43919, 58163, 83090, 87838, 116326, 219595, 290815, 307433, 439190, 581630, 614866, 1537165, 2152031, 3074330, 4304062, 10760155, 21520310]

約数ペア:

[(1, 21520310), (2, 10760155), (5, 4304062), (7, 3074330), (10, 2152031), (14, 1537165), (35, 614866), (37, 581630), (49, 439190), (70, 307433), (74, 290815), (98, 219595), (185, 116326), (245, 87838), (259, 83090), (370, 58163), (490, 43919), (518, 41545), (1187, 18130), (1295, 16618), (1813, 11870), (2374, 9065), (2590, 8309), (3626, 5935)]