21549619

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{7639}}^1$

素因数の和:7690

約数の個数: 16

約数和(自身を含む): 27381760

約数和(自身を除く): 5832141

約数列:

[1, 7, 13, 31, 91, 217, 403, 2821, 7639, 53473, 99307, 236809, 695149, 1657663, 3078517, 21549619]

約数ペア:

[(1, 21549619), (7, 3078517), (13, 1657663), (31, 695149), (91, 236809), (217, 99307), (403, 53473), (2821, 7639)]