21750705

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11789}}^1$

素因数の和:11841

約数の個数: 24

約数和(自身を含む): 38624040

約数和(自身を除く): 16873335

約数列:

[1, 3, 5, 9, 15, 41, 45, 123, 205, 369, 615, 1845, 11789, 35367, 58945, 106101, 176835, 483349, 530505, 1450047, 2416745, 4350141, 7250235, 21750705]

約数ペア:

[(1, 21750705), (3, 7250235), (5, 4350141), (9, 2416745), (15, 1450047), (41, 530505), (45, 483349), (123, 176835), (205, 106101), (369, 58945), (615, 35367), (1845, 11789)]