19800051

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1\times {\mathrm{421}}^1$

素因数の和:742

約数の個数: 16

約数和(自身を含む): 27001248

約数和(自身を除く): 7201197

約数列:

[1, 3, 61, 183, 257, 421, 771, 1263, 15677, 25681, 47031, 77043, 108197, 324591, 6600017, 19800051]

約数ペア:

[(1, 19800051), (3, 6600017), (61, 324591), (183, 108197), (257, 77043), (421, 47031), (771, 25681), (1263, 15677)]