20813912

素因数分解:

$2^3\times 7^1\times {\mathrm{443}}^1\times {\mathrm{839}}^1$

素因数の和:1295

約数の個数: 32

約数和(自身を含む): 44755200

約数和(自身を除く): 23941288

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 443, 839, 886, 1678, 1772, 3101, 3356, 3544, 5873, 6202, 6712, 11746, 12404, 23492, 24808, 46984, 371677, 743354, 1486708, 2601739, 2973416, 5203478, 10406956, 20813912]

約数ペア:

[(1, 20813912), (2, 10406956), (4, 5203478), (7, 2973416), (8, 2601739), (14, 1486708), (28, 743354), (56, 371677), (443, 46984), (839, 24808), (886, 23492), (1678, 12404), (1772, 11746), (3101, 6712), (3356, 6202), (3544, 5873)]