21119558

素因数分解:

$2^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1\times {\mathrm{541}}^1$

素因数の和:823

約数の個数: 16

約数和(自身を含む): 32194800

約数和(自身を除く): 11075242

約数列:

[1, 2, 131, 149, 262, 298, 541, 1082, 19519, 39038, 70871, 80609, 141742, 161218, 10559779, 21119558]

約数ペア:

[(1, 21119558), (2, 10559779), (131, 161218), (149, 141742), (262, 80609), (298, 70871), (541, 39038), (1082, 19519)]