21133683

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{167}}^1$

素因数の和:328

約数の個数: 32

約数和(自身を含む): 32524800

約数和(自身を除く): 11391117

約数列:

[1, 3, 9, 27, 43, 109, 129, 167, 327, 387, 501, 981, 1161, 1503, 2943, 4509, 4687, 7181, 14061, 18203, 21543, 42183, 54609, 64629, 126549, 163827, 193887, 491481, 782729, 2348187, 7044561, 21133683]

約数ペア:

[(1, 21133683), (3, 7044561), (9, 2348187), (27, 782729), (43, 491481), (109, 193887), (129, 163827), (167, 126549), (327, 64629), (387, 54609), (501, 42183), (981, 21543), (1161, 18203), (1503, 14061), (2943, 7181), (4509, 4687)]