21669475

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{761}}^1$

素因数の和:855

約数の個数: 24

約数和(自身を含む): 28913328

約数和(自身を除く): 7243853

約数列:

[1, 5, 17, 25, 67, 85, 335, 425, 761, 1139, 1675, 3805, 5695, 12937, 19025, 28475, 50987, 64685, 254935, 323425, 866779, 1274675, 4333895, 21669475]

約数ペア:

[(1, 21669475), (5, 4333895), (17, 1274675), (25, 866779), (67, 323425), (85, 254935), (335, 64685), (425, 50987), (761, 28475), (1139, 19025), (1675, 12937), (3805, 5695)]