21115136

素因数分解:

$2^8\times 7^1\times {\mathrm{11783}}^1$

素因数の和:11806

約数の個数: 36

約数和(自身を含む): 48172992

約数和(自身を除く): 27057856

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 896, 1792, 11783, 23566, 47132, 82481, 94264, 164962, 188528, 329924, 377056, 659848, 754112, 1319696, 1508224, 2639392, 3016448, 5278784, 10557568, 21115136]

約数ペア:

[(1, 21115136), (2, 10557568), (4, 5278784), (7, 3016448), (8, 2639392), (14, 1508224), (16, 1319696), (28, 754112), (32, 659848), (56, 377056), (64, 329924), (112, 188528), (128, 164962), (224, 94264), (256, 82481), (448, 47132), (896, 23566), (1792, 11783)]