21518584

素因数分解:

$2^3\times {\mathrm{131}}^1\times {\mathrm{20533}}^1$

素因数の和:20670

約数の個数: 16

約数和(自身を含む): 40657320

約数和(自身を除く): 19138736

約数列:

[1, 2, 4, 8, 131, 262, 524, 1048, 20533, 41066, 82132, 164264, 2689823, 5379646, 10759292, 21518584]

約数ペア:

[(1, 21518584), (2, 10759292), (4, 5379646), (8, 2689823), (131, 164264), (262, 82132), (524, 41066), (1048, 20533)]