20194349375

素因数分解:

$5^4\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{283}}^1$

素因数の和:490

約数の個数: 80

約数和(自身を含む): 27255275520

約数和(自身を除く): 7060926145

約数列:

[1, 5, 25, 29, 31, 125, 127, 145, 155, 283, 625, 635, 725, 775, 899, 1415, 3175, 3625, 3683, 3875, 3937, 4495, 7075, 8207, 8773, 15875, 18125, 18415, 19375, 19685, 22475, 35375, 35941, 41035, 43865, 79375, 92075, 98425, 112375, 114173, 176875, 179705, 205175, 219325, 254417, 460375, 492125, 561875, 570865, 898525, 1025875, 1042289, 1096625, 1114171, 1272085, 2301875, 2460625, 2854325, 4492625, 5129375, 5211445, 5483125, 5570855, 6360425, 14271625, 22463125, 26057225, 27854275, 31802125, 32310959, 71358125, 130286125, 139271375, 159010625, 161554795, 651430625, 696356875, 807773975, 4038869875, 20194349375]

約数ペア:

[(1, 20194349375), (5, 4038869875), (25, 807773975), (29, 696356875), (31, 651430625), (125, 161554795), (127, 159010625), (145, 139271375), (155, 130286125), (283, 71358125), (625, 32310959), (635, 31802125), (725, 27854275), (775, 26057225), (899, 22463125), (1415, 14271625), (3175, 6360425), (3625, 5570855), (3683, 5483125), (3875, 5211445), (3937, 5129375), (4495, 4492625), (7075, 2854325), (8207, 2460625), (8773, 2301875), (15875, 1272085), (18125, 1114171), (18415, 1096625), (19375, 1042289), (19685, 1025875), (22475, 898525), (35375, 570865), (35941, 561875), (41035, 492125), (43865, 460375), (79375, 254417), (92075, 219325), (98425, 205175), (112375, 179705), (114173, 176875)]