21291363919

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{557789}}^1$

素因数の和:557863

約数の個数: 24

約数和(自身を含む): 26706985200

約数和(自身を除く): 5415621281

約数列:

[1, 7, 19, 41, 49, 133, 287, 779, 931, 2009, 5453, 38171, 557789, 3904523, 10597991, 22869349, 27331661, 74185937, 160085443, 434517631, 519301559, 1120598101, 3041623417, 21291363919]

約数ペア:

[(1, 21291363919), (7, 3041623417), (19, 1120598101), (41, 519301559), (49, 434517631), (133, 160085443), (287, 74185937), (779, 27331661), (931, 22869349), (2009, 10597991), (5453, 3904523), (38171, 557789)]