21163933

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:337

約数の個数: 24

約数和(自身を含む): 26101440

約数和(自身を除く): 4937507

約数列:

[1, 7, 23, 49, 89, 161, 211, 623, 1127, 1477, 2047, 4361, 4853, 10339, 14329, 18779, 33971, 100303, 131453, 237797, 431917, 920171, 3023419, 21163933]

約数ペア:

[(1, 21163933), (7, 3023419), (23, 920171), (49, 431917), (89, 237797), (161, 131453), (211, 100303), (623, 33971), (1127, 18779), (1477, 14329), (2047, 10339), (4361, 4853)]