19978552

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{20639}}^1$

素因数の和:20667

約数の個数: 24

約数和(自身を含む): 41176800

約数和(自身を除く): 21198248

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 121, 242, 484, 968, 20639, 41278, 82556, 165112, 227029, 454058, 908116, 1816232, 2497319, 4994638, 9989276, 19978552]

約数ペア:

[(1, 19978552), (2, 9989276), (4, 4994638), (8, 2497319), (11, 1816232), (22, 908116), (44, 454058), (88, 227029), (121, 165112), (242, 82556), (484, 41278), (968, 20639)]