21382075

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{5981}}^1$

素因数の和:6015

約数の個数: 24

約数和(自身を含む): 31154256

約数和(自身を除く): 9772181

約数列:

[1, 5, 11, 13, 25, 55, 65, 143, 275, 325, 715, 3575, 5981, 29905, 65791, 77753, 149525, 328955, 388765, 855283, 1644775, 1943825, 4276415, 21382075]

約数ペア:

[(1, 21382075), (5, 4276415), (11, 1943825), (13, 1644775), (25, 855283), (55, 388765), (65, 328955), (143, 149525), (275, 77753), (325, 65791), (715, 29905), (3575, 5981)]