21254814

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3923}}^1$

素因数の和:3981

約数の個数: 48

約数和(自身を含む): 53868672

約数和(自身を除く): 32613858

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 43, 63, 86, 126, 129, 258, 301, 387, 602, 774, 903, 1806, 2709, 3923, 5418, 7846, 11769, 23538, 27461, 35307, 54922, 70614, 82383, 164766, 168689, 247149, 337378, 494298, 506067, 1012134, 1180823, 1518201, 2361646, 3036402, 3542469, 7084938, 10627407, 21254814]

約数ペア:

[(1, 21254814), (2, 10627407), (3, 7084938), (6, 3542469), (7, 3036402), (9, 2361646), (14, 1518201), (18, 1180823), (21, 1012134), (42, 506067), (43, 494298), (63, 337378), (86, 247149), (126, 168689), (129, 164766), (258, 82383), (301, 70614), (387, 54922), (602, 35307), (774, 27461), (903, 23538), (1806, 11769), (2709, 7846), (3923, 5418)]