81787685

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{4241}}^1$

素因数の和:4301

約数の個数: 32

約数和(自身を含む): 122169600

約数和(自身を除く): 40381915

約数列:

[1, 5, 7, 19, 29, 35, 95, 133, 145, 203, 551, 665, 1015, 2755, 3857, 4241, 19285, 21205, 29687, 80579, 122989, 148435, 402895, 564053, 614945, 860923, 2336791, 2820265, 4304615, 11683955, 16357537, 81787685]

約数ペア:

[(1, 81787685), (5, 16357537), (7, 11683955), (19, 4304615), (29, 2820265), (35, 2336791), (95, 860923), (133, 614945), (145, 564053), (203, 402895), (551, 148435), (665, 122989), (1015, 80579), (2755, 29687), (3857, 21205), (4241, 19285)]