21971467

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^2$

素因数の和:203

約数の個数: 24

約数和(自身を含む): 27663360

約数和(自身を除く): 5691893

約数列:

[1, 7, 19, 31, 73, 133, 217, 511, 589, 1387, 2263, 4123, 5329, 9709, 15841, 37303, 42997, 101251, 165199, 300979, 708757, 1156393, 3138781, 21971467]

約数ペア:

[(1, 21971467), (7, 3138781), (19, 1156393), (31, 708757), (73, 300979), (133, 165199), (217, 101251), (511, 42997), (589, 37303), (1387, 15841), (2263, 9709), (4123, 5329)]