21798483

素因数分解:

$3^1\times 7^2\times {\mathrm{257}}^1\times {\mathrm{577}}^1$

素因数の和:851

約数の個数: 24

約数和(自身を含む): 34000272

約数和(自身を除く): 12201789

約数列:

[1, 3, 7, 21, 49, 147, 257, 577, 771, 1731, 1799, 4039, 5397, 12117, 12593, 28273, 37779, 84819, 148289, 444867, 1038023, 3114069, 7266161, 21798483]

約数ペア:

[(1, 21798483), (3, 7266161), (7, 3114069), (21, 1038023), (49, 444867), (147, 148289), (257, 84819), (577, 37779), (771, 28273), (1731, 12593), (1799, 12117), (4039, 5397)]