16001997

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{727}}^1$

素因数の和:793

約数の個数: 32

約数和(自身を含む): 25159680

約数和(自身を除く): 9157683

約数列:

[1, 3, 11, 23, 29, 33, 69, 87, 253, 319, 667, 727, 759, 957, 2001, 2181, 7337, 7997, 16721, 21083, 22011, 23991, 50163, 63249, 183931, 231913, 484909, 551793, 695739, 1454727, 5333999, 16001997]

約数ペア:

[(1, 16001997), (3, 5333999), (11, 1454727), (23, 695739), (29, 551793), (33, 484909), (69, 231913), (87, 183931), (253, 63249), (319, 50163), (667, 23991), (727, 22011), (759, 21083), (957, 16721), (2001, 7997), (2181, 7337)]