18756591

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1621}}^1$

素因数の和:1679

約数の個数: 32

約数和(自身を含む): 31142400

約数和(自身を除く): 12385809

約数列:

[1, 3, 7, 19, 21, 29, 57, 87, 133, 203, 399, 551, 609, 1621, 1653, 3857, 4863, 11347, 11571, 30799, 34041, 47009, 92397, 141027, 215593, 329063, 646779, 893171, 987189, 2679513, 6252197, 18756591]

約数ペア:

[(1, 18756591), (3, 6252197), (7, 2679513), (19, 987189), (21, 893171), (29, 646779), (57, 329063), (87, 215593), (133, 141027), (203, 92397), (399, 47009), (551, 34041), (609, 30799), (1621, 11571), (1653, 11347), (3857, 4863)]