21207998

素因数分解:

$2^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{167}}^1\times {\mathrm{193}}^1$

素因数の和:416

約数の個数: 32

約数和(自身を含む): 37545984

約数和(自身を除く): 16337986

約数列:

[1, 2, 7, 14, 47, 94, 167, 193, 329, 334, 386, 658, 1169, 1351, 2338, 2702, 7849, 9071, 15698, 18142, 32231, 54943, 63497, 64462, 109886, 126994, 225617, 451234, 1514857, 3029714, 10603999, 21207998]

約数ペア:

[(1, 21207998), (2, 10603999), (7, 3029714), (14, 1514857), (47, 451234), (94, 225617), (167, 126994), (193, 109886), (329, 64462), (334, 63497), (386, 54943), (658, 32231), (1169, 18142), (1351, 15698), (2338, 9071), (2702, 7849)]