19785716

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{619}}^1$

素因数の和:815

約数の個数: 24

約数和(自身を含む): 35518560

約数和(自身を除く): 15732844

約数列:

[1, 2, 4, 61, 122, 131, 244, 262, 524, 619, 1238, 2476, 7991, 15982, 31964, 37759, 75518, 81089, 151036, 162178, 324356, 4946429, 9892858, 19785716]

約数ペア:

[(1, 19785716), (2, 9892858), (4, 4946429), (61, 324356), (122, 162178), (131, 151036), (244, 81089), (262, 75518), (524, 37759), (619, 31964), (1238, 15982), (2476, 7991)]