20406582920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{195991}}^1$

素因数の和:196158

約数の個数: 64

約数和(自身を含む): 48684412800

約数和(自身を除く): 28277829880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 137, 152, 190, 274, 380, 548, 685, 760, 1096, 1370, 2603, 2740, 5206, 5480, 10412, 13015, 20824, 26030, 52060, 104120, 195991, 391982, 783964, 979955, 1567928, 1959910, 3723829, 3919820, 7447658, 7839640, 14895316, 18619145, 26850767, 29790632, 37238290, 53701534, 74476580, 107403068, 134253835, 148953160, 214806136, 268507670, 510164573, 537015340, 1020329146, 1074030680, 2040658292, 2550822865, 4081316584, 5101645730, 10203291460, 20406582920]

約数ペア:

[(1, 20406582920), (2, 10203291460), (4, 5101645730), (5, 4081316584), (8, 2550822865), (10, 2040658292), (19, 1074030680), (20, 1020329146), (38, 537015340), (40, 510164573), (76, 268507670), (95, 214806136), (137, 148953160), (152, 134253835), (190, 107403068), (274, 74476580), (380, 53701534), (548, 37238290), (685, 29790632), (760, 26850767), (1096, 18619145), (1370, 14895316), (2603, 7839640), (2740, 7447658), (5206, 3919820), (5480, 3723829), (10412, 1959910), (13015, 1567928), (20824, 979955), (26030, 783964), (52060, 391982), (104120, 195991)]