21197274

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{263}}^1$

素因数の和:395

約数の個数: 64

約数和(自身を含む): 51701760

約数和(自身を除く): 30504486

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 101, 114, 133, 202, 263, 266, 303, 399, 526, 606, 707, 789, 798, 1414, 1578, 1841, 1919, 2121, 3682, 3838, 4242, 4997, 5523, 5757, 9994, 11046, 11514, 13433, 14991, 26563, 26866, 29982, 34979, 40299, 53126, 69958, 79689, 80598, 104937, 159378, 185941, 209874, 371882, 504697, 557823, 1009394, 1115646, 1514091, 3028182, 3532879, 7065758, 10598637, 21197274]

約数ペア:

[(1, 21197274), (2, 10598637), (3, 7065758), (6, 3532879), (7, 3028182), (14, 1514091), (19, 1115646), (21, 1009394), (38, 557823), (42, 504697), (57, 371882), (101, 209874), (114, 185941), (133, 159378), (202, 104937), (263, 80598), (266, 79689), (303, 69958), (399, 53126), (526, 40299), (606, 34979), (707, 29982), (789, 26866), (798, 26563), (1414, 14991), (1578, 13433), (1841, 11514), (1919, 11046), (2121, 9994), (3682, 5757), (3838, 5523), (4242, 4997)]