21264455

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{839}}^1$

素因数の和:1018

約数の個数: 16

約数和(自身を含む): 26429760

約数和(自身を除く): 5165305

約数列:

[1, 5, 37, 137, 185, 685, 839, 4195, 5069, 25345, 31043, 114943, 155215, 574715, 4252891, 21264455]

約数ペア:

[(1, 21264455), (5, 4252891), (37, 574715), (137, 155215), (185, 114943), (685, 31043), (839, 25345), (4195, 5069)]