21421393

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{739}}^1$

素因数の和:888

約数の個数: 16

約数和(自身を含む): 25361280

約数和(自身を除く): 3939887

約数列:

[1, 7, 41, 101, 287, 707, 739, 4141, 5173, 28987, 30299, 74639, 212093, 522473, 3060199, 21421393]

約数ペア:

[(1, 21421393), (7, 3060199), (41, 522473), (101, 212093), (287, 74639), (707, 30299), (739, 28987), (4141, 5173)]