21810404

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{3727}}^1$

素因数の和:3768

約数の個数: 48

約数和(自身を含む): 50104320

約数和(自身を除く): 28293916

約数列:

[1, 2, 4, 7, 11, 14, 19, 22, 28, 38, 44, 76, 77, 133, 154, 209, 266, 308, 418, 532, 836, 1463, 2926, 3727, 5852, 7454, 14908, 26089, 40997, 52178, 70813, 81994, 104356, 141626, 163988, 283252, 286979, 495691, 573958, 778943, 991382, 1147916, 1557886, 1982764, 3115772, 5452601, 10905202, 21810404]

約数ペア:

[(1, 21810404), (2, 10905202), (4, 5452601), (7, 3115772), (11, 1982764), (14, 1557886), (19, 1147916), (22, 991382), (28, 778943), (38, 573958), (44, 495691), (76, 286979), (77, 283252), (133, 163988), (154, 141626), (209, 104356), (266, 81994), (308, 70813), (418, 52178), (532, 40997), (836, 26089), (1463, 14908), (2926, 7454), (3727, 5852)]