19979407

素因数分解:

$7^3\times {\mathrm{31}}^1\times {\mathrm{1879}}^1$

素因数の和:1931

約数の個数: 16

約数和(自身を含む): 24064000

約数和(自身を除く): 4084593

約数列:

[1, 7, 31, 49, 217, 343, 1519, 1879, 10633, 13153, 58249, 92071, 407743, 644497, 2854201, 19979407]

約数ペア:

[(1, 19979407), (7, 2854201), (31, 644497), (49, 407743), (217, 92071), (343, 58249), (1519, 13153), (1879, 10633)]