21061515

素因数分解:

$3^1\times 5^1\times {\mathrm{863}}^1\times {\mathrm{1627}}^1$

素因数の和:2498

約数の個数: 16

約数和(自身を含む): 33758208

約数和(自身を除く): 12696693

約数列:

[1, 3, 5, 15, 863, 1627, 2589, 4315, 4881, 8135, 12945, 24405, 1404101, 4212303, 7020505, 21061515]

約数ペア:

[(1, 21061515), (3, 7020505), (5, 4212303), (15, 1404101), (863, 24405), (1627, 12945), (2589, 8135), (4315, 4881)]