20401605

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{21589}}^1$

素因数の和:21610

約数の個数: 32

約数和(自身を含む): 41452800

約数和(自身を除く): 21051195

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 21589, 64767, 107945, 151123, 194301, 323835, 453369, 582903, 755615, 971505, 1360107, 2266845, 2914515, 4080321, 6800535, 20401605]

約数ペア:

[(1, 20401605), (3, 6800535), (5, 4080321), (7, 2914515), (9, 2266845), (15, 1360107), (21, 971505), (27, 755615), (35, 582903), (45, 453369), (63, 323835), (105, 194301), (135, 151123), (189, 107945), (315, 64767), (945, 21589)]