21264265

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{3547}}^1$

素因数の和:3672

約数の個数: 16

約数和(自身を含む): 28100160

約数和(自身を除く): 6835895

約数列:

[1, 5, 11, 55, 109, 545, 1199, 3547, 5995, 17735, 39017, 195085, 386623, 1933115, 4252853, 21264265]

約数ペア:

[(1, 21264265), (5, 4252853), (11, 1933115), (55, 386623), (109, 195085), (545, 39017), (1199, 17735), (3547, 5995)]