21298025

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{7159}}^1$

素因数の和:7193

約数の個数: 24

約数和(自身を含む): 31962240

約数和(自身を除く): 10664215

約数列:

[1, 5, 7, 17, 25, 35, 85, 119, 175, 425, 595, 2975, 7159, 35795, 50113, 121703, 178975, 250565, 608515, 851921, 1252825, 3042575, 4259605, 21298025]

約数ペア:

[(1, 21298025), (5, 4259605), (7, 3042575), (17, 1252825), (25, 851921), (35, 608515), (85, 250565), (119, 178975), (175, 121703), (425, 50113), (595, 35795), (2975, 7159)]