21347984

素因数分解:

$2^4\times 7^1\times {\mathrm{190607}}^1$

素因数の和:190622

約数の個数: 20

約数和(自身を含む): 47270784

約数和(自身を除く): 25922800

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 190607, 381214, 762428, 1334249, 1524856, 2668498, 3049712, 5336996, 10673992, 21347984]

約数ペア:

[(1, 21347984), (2, 10673992), (4, 5336996), (7, 3049712), (8, 2668498), (14, 1524856), (16, 1334249), (28, 762428), (56, 381214), (112, 190607)]