21520156

素因数分解:

$2^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{5867}}^1$

素因数の和:6009

約数の個数: 24

約数和(自身を含む): 43376256

約数和(自身を除く): 21856100

約数列:

[1, 2, 4, 7, 14, 28, 131, 262, 524, 917, 1834, 3668, 5867, 11734, 23468, 41069, 82138, 164276, 768577, 1537154, 3074308, 5380039, 10760078, 21520156]

約数ペア:

[(1, 21520156), (2, 10760078), (4, 5380039), (7, 3074308), (14, 1537154), (28, 768577), (131, 164276), (262, 82138), (524, 41069), (917, 23468), (1834, 11734), (3668, 5867)]