21008115

素因数分解:

$3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4283}}^1$

素因数の和:4403

約数の個数: 24

約数和(自身を含む): 36756720

約数和(自身を除く): 15748605

約数列:

[1, 3, 5, 9, 15, 45, 109, 327, 545, 981, 1635, 4283, 4905, 12849, 21415, 38547, 64245, 192735, 466847, 1400541, 2334235, 4201623, 7002705, 21008115]

約数ペア:

[(1, 21008115), (3, 7002705), (5, 4201623), (9, 2334235), (15, 1400541), (45, 466847), (109, 192735), (327, 64245), (545, 38547), (981, 21415), (1635, 12849), (4283, 4905)]