21556605

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{859}}^1$

素因数の和:1113

約数の個数: 32

約数和(自身を含む): 39628800

約数和(自身を除く): 18072195

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 239, 717, 859, 1195, 1673, 2577, 3585, 4295, 5019, 6013, 8365, 12885, 18039, 25095, 30065, 90195, 205301, 615903, 1026505, 1437107, 3079515, 4311321, 7185535, 21556605]

約数ペア:

[(1, 21556605), (3, 7185535), (5, 4311321), (7, 3079515), (15, 1437107), (21, 1026505), (35, 615903), (105, 205301), (239, 90195), (717, 30065), (859, 25095), (1195, 18039), (1673, 12885), (2577, 8365), (3585, 6013), (4295, 5019)]