28691215

素因数分解:

$5^1\times 7^2\times {\mathrm{181}}^1\times {\mathrm{647}}^1$

素因数の和:847

約数の個数: 24

約数和(自身を含む): 40334112

約数和(自身を除く): 11642897

約数列:

[1, 5, 7, 35, 49, 181, 245, 647, 905, 1267, 3235, 4529, 6335, 8869, 22645, 31703, 44345, 117107, 158515, 585535, 819749, 4098745, 5738243, 28691215]

約数ペア:

[(1, 28691215), (5, 5738243), (7, 4098745), (35, 819749), (49, 585535), (181, 158515), (245, 117107), (647, 44345), (905, 31703), (1267, 22645), (3235, 8869), (4529, 6335)]