21053403

素因数分解:

$3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{2551}}^1$

素因数の和:2695

約数の個数: 24

約数和(自身を含む): 35033856

約数和(自身を除く): 13980453

約数列:

[1, 3, 7, 9, 21, 63, 131, 393, 917, 1179, 2551, 2751, 7653, 8253, 17857, 22959, 53571, 160713, 334181, 1002543, 2339267, 3007629, 7017801, 21053403]

約数ペア:

[(1, 21053403), (3, 7017801), (7, 3007629), (9, 2339267), (21, 1002543), (63, 334181), (131, 160713), (393, 53571), (917, 22959), (1179, 17857), (2551, 8253), (2751, 7653)]