21719885

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{3623}}^1$

素因数の和:3748

約数の個数: 16

約数和(自身を含む): 28702080

約数和(自身を除く): 6982195

約数列:

[1, 5, 11, 55, 109, 545, 1199, 3623, 5995, 18115, 39853, 199265, 394907, 1974535, 4343977, 21719885]

約数ペア:

[(1, 21719885), (5, 4343977), (11, 1974535), (55, 394907), (109, 199265), (545, 39853), (1199, 18115), (3623, 5995)]