21066474

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{571}}^1$

素因数の和:643

約数の個数: 64

約数和(自身を含む): 50738688

約数和(自身を除く): 29672214

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 43, 66, 78, 86, 129, 143, 258, 286, 429, 473, 559, 571, 858, 946, 1118, 1142, 1419, 1677, 1713, 2838, 3354, 3426, 6149, 6281, 7423, 12298, 12562, 14846, 18447, 18843, 22269, 24553, 36894, 37686, 44538, 49106, 73659, 81653, 147318, 163306, 244959, 270083, 319189, 489918, 540166, 638378, 810249, 957567, 1620498, 1915134, 3511079, 7022158, 10533237, 21066474]

約数ペア:

[(1, 21066474), (2, 10533237), (3, 7022158), (6, 3511079), (11, 1915134), (13, 1620498), (22, 957567), (26, 810249), (33, 638378), (39, 540166), (43, 489918), (66, 319189), (78, 270083), (86, 244959), (129, 163306), (143, 147318), (258, 81653), (286, 73659), (429, 49106), (473, 44538), (559, 37686), (571, 36894), (858, 24553), (946, 22269), (1118, 18843), (1142, 18447), (1419, 14846), (1677, 12562), (1713, 12298), (2838, 7423), (3354, 6281), (3426, 6149)]