20987150848

素因数分解:

$2^9\times {\mathrm{41}}^1\times {\mathrm{999769}}^1$

素因数の和:999828

約数の個数: 40

約数和(自身を含む): 42956117820

約数和(自身を除く): 21968966972

約数列:

[1, 2, 4, 8, 16, 32, 41, 64, 82, 128, 164, 256, 328, 512, 656, 1312, 2624, 5248, 10496, 20992, 999769, 1999538, 3999076, 7998152, 15996304, 31992608, 40990529, 63985216, 81981058, 127970432, 163962116, 255940864, 327924232, 511881728, 655848464, 1311696928, 2623393856, 5246787712, 10493575424, 20987150848]

約数ペア:

[(1, 20987150848), (2, 10493575424), (4, 5246787712), (8, 2623393856), (16, 1311696928), (32, 655848464), (41, 511881728), (64, 327924232), (82, 255940864), (128, 163962116), (164, 127970432), (256, 81981058), (328, 63985216), (512, 40990529), (656, 31992608), (1312, 15996304), (2624, 7998152), (5248, 3999076), (10496, 1999538), (20992, 999769)]