21890886

素因数分解:

$2^1\times 3^1\times {\mathrm{131}}^1\times {\mathrm{27851}}^1$

素因数の和:27987

約数の個数: 16

約数和(自身を含む): 44117568

約数和(自身を除く): 22226682

約数列:

[1, 2, 3, 6, 131, 262, 393, 786, 27851, 55702, 83553, 167106, 3648481, 7296962, 10945443, 21890886]

約数ペア:

[(1, 21890886), (2, 10945443), (3, 7296962), (6, 3648481), (131, 167106), (262, 83553), (393, 55702), (786, 27851)]