21309678

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4793}}^1$

素因数の和:4833

約数の個数: 48

約数和(自身を含む): 52350480

約数和(自身を除く): 31040802

約数列:

[1, 2, 3, 6, 9, 13, 18, 19, 26, 38, 39, 57, 78, 114, 117, 171, 234, 247, 342, 494, 741, 1482, 2223, 4446, 4793, 9586, 14379, 28758, 43137, 62309, 86274, 91067, 124618, 182134, 186927, 273201, 373854, 546402, 560781, 819603, 1121562, 1183871, 1639206, 2367742, 3551613, 7103226, 10654839, 21309678]

約数ペア:

[(1, 21309678), (2, 10654839), (3, 7103226), (6, 3551613), (9, 2367742), (13, 1639206), (18, 1183871), (19, 1121562), (26, 819603), (38, 560781), (39, 546402), (57, 373854), (78, 273201), (114, 186927), (117, 182134), (171, 124618), (234, 91067), (247, 86274), (342, 62309), (494, 43137), (741, 28758), (1482, 14379), (2223, 9586), (4446, 4793)]