21099465

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27581}}^1$

素因数の和:27609

約数の個数: 24

約数和(自身を含む): 38725128

約数和(自身を除く): 17625663

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27581, 82743, 137905, 248229, 413715, 468877, 1241145, 1406631, 2344385, 4219893, 7033155, 21099465]

約数ペア:

[(1, 21099465), (3, 7033155), (5, 4219893), (9, 2344385), (15, 1406631), (17, 1241145), (45, 468877), (51, 413715), (85, 248229), (153, 137905), (255, 82743), (765, 27581)]