21757666

素因数分解:

$2^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:199

約数の個数: 48

約数和(自身を含む): 39890880

約数和(自身を除く): 18133214

約数列:

[1, 2, 7, 14, 49, 53, 59, 71, 98, 106, 118, 142, 371, 413, 497, 742, 826, 994, 2597, 2891, 3127, 3479, 3763, 4189, 5194, 5782, 6254, 6958, 7526, 8378, 21889, 26341, 29323, 43778, 52682, 58646, 153223, 184387, 205261, 222017, 306446, 368774, 410522, 444034, 1554119, 3108238, 10878833, 21757666]

約数ペア:

[(1, 21757666), (2, 10878833), (7, 3108238), (14, 1554119), (49, 444034), (53, 410522), (59, 368774), (71, 306446), (98, 222017), (106, 205261), (118, 184387), (142, 153223), (371, 58646), (413, 52682), (497, 43778), (742, 29323), (826, 26341), (994, 21889), (2597, 8378), (2891, 7526), (3127, 6958), (3479, 6254), (3763, 5782), (4189, 5194)]