20400555

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{2003}}^1$

素因数の和:2115

約数の個数: 32

約数和(自身を含む): 37707264

約数和(自身を除く): 17306709

約数列:

[1, 3, 5, 7, 15, 21, 35, 97, 105, 291, 485, 679, 1455, 2003, 2037, 3395, 6009, 10015, 10185, 14021, 30045, 42063, 70105, 194291, 210315, 582873, 971455, 1360037, 2914365, 4080111, 6800185, 20400555]

約数ペア:

[(1, 20400555), (3, 6800185), (5, 4080111), (7, 2914365), (15, 1360037), (21, 971455), (35, 582873), (97, 210315), (105, 194291), (291, 70105), (485, 42063), (679, 30045), (1455, 14021), (2003, 10185), (2037, 10015), (3395, 6009)]