21674191

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1$

素因数の和:231

約数の個数: 32

約数和(自身を含む): 28366848

約数和(自身を除く): 6692657

約数列:

[1, 7, 11, 47, 53, 77, 113, 329, 371, 517, 583, 791, 1243, 2491, 3619, 4081, 5311, 5989, 8701, 17437, 27401, 37177, 41923, 58421, 65879, 191807, 281483, 408947, 461153, 1970381, 3096313, 21674191]

約数ペア:

[(1, 21674191), (7, 3096313), (11, 1970381), (47, 461153), (53, 408947), (77, 281483), (113, 191807), (329, 65879), (371, 58421), (517, 41923), (583, 37177), (791, 27401), (1243, 17437), (2491, 8701), (3619, 5989), (4081, 5311)]