21226842

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{12959}}^1$

素因数の和:12987

約数の個数: 48

約数和(自身を含む): 56609280

約数和(自身を除く): 35382438

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 39, 42, 63, 78, 91, 117, 126, 182, 234, 273, 546, 819, 1638, 12959, 25918, 38877, 77754, 90713, 116631, 168467, 181426, 233262, 272139, 336934, 505401, 544278, 816417, 1010802, 1179269, 1516203, 1632834, 2358538, 3032406, 3537807, 7075614, 10613421, 21226842]

約数ペア:

[(1, 21226842), (2, 10613421), (3, 7075614), (6, 3537807), (7, 3032406), (9, 2358538), (13, 1632834), (14, 1516203), (18, 1179269), (21, 1010802), (26, 816417), (39, 544278), (42, 505401), (63, 336934), (78, 272139), (91, 233262), (117, 181426), (126, 168467), (182, 116631), (234, 90713), (273, 77754), (546, 38877), (819, 25918), (1638, 12959)]