1971025917

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{240047}}^1$

素因数の和:240097

約数の個数: 32

約数和(自身を含む): 3318423552

約数和(自身を除く): 1347397635

約数列:

[1, 3, 7, 17, 21, 23, 51, 69, 119, 161, 357, 391, 483, 1173, 2737, 8211, 240047, 720141, 1680329, 4080799, 5040987, 5521081, 12242397, 16563243, 28565593, 38647567, 85696779, 93858377, 115942701, 281575131, 657008639, 1971025917]

約数ペア:

[(1, 1971025917), (3, 657008639), (7, 281575131), (17, 115942701), (21, 93858377), (23, 85696779), (51, 38647567), (69, 28565593), (119, 16563243), (161, 12242397), (357, 5521081), (391, 5040987), (483, 4080799), (1173, 1680329), (2737, 720141), (8211, 240047)]