21984487

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{353}}^1$

素因数の和:439

約数の個数: 24

約数和(自身を含む): 27119232

約数和(自身を除く): 5134745

約数列:

[1, 7, 31, 41, 49, 217, 287, 353, 1271, 1519, 2009, 2471, 8897, 10943, 14473, 17297, 62279, 76601, 101311, 448663, 536207, 709177, 3140641, 21984487]

約数ペア:

[(1, 21984487), (7, 3140641), (31, 709177), (41, 536207), (49, 448663), (217, 101311), (287, 76601), (353, 62279), (1271, 17297), (1519, 14473), (2009, 10943), (2471, 8897)]