21243225

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{9767}}^1$

素因数の和:9809

約数の個数: 24

約数和(自身を含む): 36336960

約数和(自身を除く): 15093735

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 145, 435, 725, 2175, 9767, 29301, 48835, 146505, 244175, 283243, 732525, 849729, 1416215, 4248645, 7081075, 21243225]

約数ペア:

[(1, 21243225), (3, 7081075), (5, 4248645), (15, 1416215), (25, 849729), (29, 732525), (75, 283243), (87, 244175), (145, 146505), (435, 48835), (725, 29301), (2175, 9767)]