21994749

素因数分解:

$3^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{2749}}^1$

素因数の和:2889

約数の個数: 24

約数和(自身を含む): 36608000

約数和(自身を除く): 14613251

約数列:

[1, 3, 7, 9, 21, 63, 127, 381, 889, 1143, 2667, 2749, 8001, 8247, 19243, 24741, 57729, 173187, 349123, 1047369, 2443861, 3142107, 7331583, 21994749]

約数ペア:

[(1, 21994749), (3, 7331583), (7, 3142107), (9, 2443861), (21, 1047369), (63, 349123), (127, 173187), (381, 57729), (889, 24741), (1143, 19243), (2667, 8247), (2749, 8001)]