20815638

素因数分解:

$2^1\times 3^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{373}}^1$

素因数の和:580

約数の個数: 32

約数和(自身を含む): 42653952

約数和(自身を除く): 21838314

約数列:

[1, 2, 3, 6, 71, 131, 142, 213, 262, 373, 393, 426, 746, 786, 1119, 2238, 9301, 18602, 26483, 27903, 48863, 52966, 55806, 79449, 97726, 146589, 158898, 293178, 3469273, 6938546, 10407819, 20815638]

約数ペア:

[(1, 20815638), (2, 10407819), (3, 6938546), (6, 3469273), (71, 293178), (131, 158898), (142, 146589), (213, 97726), (262, 79449), (373, 55806), (393, 52966), (426, 48863), (746, 27903), (786, 26483), (1119, 18602), (2238, 9301)]