21297515

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{3529}}^1$

素因数の和:3622

約数の個数: 16

約数和(自身を含む): 27449280

約数和(自身を除く): 6151765

約数列:

[1, 5, 17, 71, 85, 355, 1207, 3529, 6035, 17645, 59993, 250559, 299965, 1252795, 4259503, 21297515]

約数ペア:

[(1, 21297515), (5, 4259503), (17, 1252795), (71, 299965), (85, 250559), (355, 59993), (1207, 17645), (3529, 6035)]