21403042

素因数分解:

$2^1\times {\mathrm{131}}^1\times {\mathrm{151}}^1\times {\mathrm{541}}^1$

素因数の和:825

約数の個数: 16

約数和(自身を含む): 32624064

約数和(自身を除く): 11221022

約数列:

[1, 2, 131, 151, 262, 302, 541, 1082, 19781, 39562, 70871, 81691, 141742, 163382, 10701521, 21403042]

約数ペア:

[(1, 21403042), (2, 10701521), (131, 163382), (151, 141742), (262, 81691), (302, 70871), (541, 39562), (1082, 19781)]