28724839

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:211

約数の個数: 32

約数和(自身を含む): 35622720

約数和(自身を除く): 6897881

約数列:

[1, 11, 13, 37, 61, 89, 143, 407, 481, 671, 793, 979, 1157, 2257, 3293, 5291, 5429, 8723, 12727, 24827, 29341, 36223, 42809, 59719, 70577, 200873, 322751, 470899, 776347, 2209603, 2611349, 28724839]

約数ペア:

[(1, 28724839), (11, 2611349), (13, 2209603), (37, 776347), (61, 470899), (89, 322751), (143, 200873), (407, 70577), (481, 59719), (671, 42809), (793, 36223), (979, 29341), (1157, 24827), (2257, 12727), (3293, 8723), (5291, 5429)]