21121364

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{6761}}^1$

素因数の和:6847

約数の個数: 24

約数和(自身を含む): 40896576

約数和(自身を除く): 19775212

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 781, 1562, 3124, 6761, 13522, 27044, 74371, 148742, 297484, 480031, 960062, 1920124, 5280341, 10560682, 21121364]

約数ペア:

[(1, 21121364), (2, 10560682), (4, 5280341), (11, 1920124), (22, 960062), (44, 480031), (71, 297484), (142, 148742), (284, 74371), (781, 27044), (1562, 13522), (3124, 6761)]