20921033

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{487}}^1$

素因数の和:549

約数の個数: 24

約数和(自身を含む): 26773632

約数和(自身を除く): 5852599

約数列:

[1, 7, 17, 19, 119, 133, 323, 361, 487, 2261, 2527, 3409, 6137, 8279, 9253, 42959, 57953, 64771, 157301, 175807, 1101107, 1230649, 2988719, 20921033]

約数ペア:

[(1, 20921033), (7, 2988719), (17, 1230649), (19, 1101107), (119, 175807), (133, 157301), (323, 64771), (361, 57953), (487, 42959), (2261, 9253), (2527, 8279), (3409, 6137)]