21966679

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1$

素因数の和:259

約数の個数: 32

約数和(自身を含む): 28385280

約数和(自身を除く): 6418601

約数列:

[1, 7, 19, 23, 43, 133, 161, 167, 301, 437, 817, 989, 1169, 3059, 3173, 3841, 5719, 6923, 7181, 18791, 22211, 26887, 50267, 72979, 131537, 136439, 165163, 510853, 955073, 1156141, 3138097, 21966679]

約数ペア:

[(1, 21966679), (7, 3138097), (19, 1156141), (23, 955073), (43, 510853), (133, 165163), (161, 136439), (167, 131537), (301, 72979), (437, 50267), (817, 26887), (989, 22211), (1169, 18791), (3059, 7181), (3173, 6923), (3841, 5719)]