13437921

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{33679}}^1$

素因数の和:33708

約数の個数: 16

約数和(自身を含む): 21555200

約数和(自身を除く): 8117279

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 33679, 101037, 235753, 639901, 707259, 1919703, 4479307, 13437921]

約数ペア:

[(1, 13437921), (3, 4479307), (7, 1919703), (19, 707259), (21, 639901), (57, 235753), (133, 101037), (399, 33679)]