21260382

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{349}}^1$

素因数の和:449

約数の個数: 64

約数和(自身を含む): 50803200

約数和(自身を除く): 29542818

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 71, 78, 142, 143, 213, 286, 349, 426, 429, 698, 781, 858, 923, 1047, 1562, 1846, 2094, 2343, 2769, 3839, 4537, 4686, 5538, 7678, 9074, 10153, 11517, 13611, 20306, 23034, 24779, 27222, 30459, 49558, 49907, 60918, 74337, 99814, 148674, 149721, 272569, 299442, 322127, 545138, 644254, 817707, 966381, 1635414, 1932762, 3543397, 7086794, 10630191, 21260382]

約数ペア:

[(1, 21260382), (2, 10630191), (3, 7086794), (6, 3543397), (11, 1932762), (13, 1635414), (22, 966381), (26, 817707), (33, 644254), (39, 545138), (66, 322127), (71, 299442), (78, 272569), (142, 149721), (143, 148674), (213, 99814), (286, 74337), (349, 60918), (426, 49907), (429, 49558), (698, 30459), (781, 27222), (858, 24779), (923, 23034), (1047, 20306), (1562, 13611), (1846, 11517), (2094, 10153), (2343, 9074), (2769, 7678), (3839, 5538), (4537, 4686)]