21885916

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{4339}}^1$

素因数の和:4453

約数の個数: 24

約数和(自身を含む): 41681360

約数和(自身を除く): 19795444

約数列:

[1, 2, 4, 13, 26, 52, 97, 194, 388, 1261, 2522, 4339, 5044, 8678, 17356, 56407, 112814, 225628, 420883, 841766, 1683532, 5471479, 10942958, 21885916]

約数ペア:

[(1, 21885916), (2, 10942958), (4, 5471479), (13, 1683532), (26, 841766), (52, 420883), (97, 225628), (194, 112814), (388, 56407), (1261, 17356), (2522, 8678), (4339, 5044)]