20866515

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47969}}^1$

素因数の和:48006

約数の個数: 16

約数和(自身を含む): 34538400

約数和(自身を除く): 13671885

約数列:

[1, 3, 5, 15, 29, 87, 145, 435, 47969, 143907, 239845, 719535, 1391101, 4173303, 6955505, 20866515]

約数ペア:

[(1, 20866515), (3, 6955505), (5, 4173303), (15, 1391101), (29, 719535), (87, 239845), (145, 143907), (435, 47969)]