21696689

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{4409}}^1$

素因数の和:4472

約数の個数: 16

約数和(自身を含む): 26812800

約数和(自身を除く): 5116111

約数列:

[1, 7, 19, 37, 133, 259, 703, 4409, 4921, 30863, 83771, 163133, 586397, 1141931, 3099527, 21696689]

約数ペア:

[(1, 21696689), (7, 3099527), (19, 1141931), (37, 586397), (133, 163133), (259, 83771), (703, 30863), (4409, 4921)]