20870157

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{541}}^1$

素因数の和:729

約数の個数: 32

約数和(自身を含む): 34965504

約数和(自身を除く): 14095347

約数列:

[1, 3, 7, 11, 21, 33, 77, 167, 231, 501, 541, 1169, 1623, 1837, 3507, 3787, 5511, 5951, 11361, 12859, 17853, 38577, 41657, 90347, 124971, 271041, 632429, 993817, 1897287, 2981451, 6956719, 20870157]

約数ペア:

[(1, 20870157), (3, 6956719), (7, 2981451), (11, 1897287), (21, 993817), (33, 632429), (77, 271041), (167, 124971), (231, 90347), (501, 41657), (541, 38577), (1169, 17853), (1623, 12859), (1837, 11361), (3507, 5951), (3787, 5511)]