21856239

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{971}}^1$

素因数の和:1079

約数の個数: 24

約数和(自身を含む): 32904144

約数和(自身を除く): 11047905

約数列:

[1, 3, 9, 41, 61, 123, 183, 369, 549, 971, 2501, 2913, 7503, 8739, 22509, 39811, 59231, 119433, 177693, 358299, 533079, 2428471, 7285413, 21856239]

約数ペア:

[(1, 21856239), (3, 7285413), (9, 2428471), (41, 533079), (61, 358299), (123, 177693), (183, 119433), (369, 59231), (549, 39811), (971, 22509), (2501, 8739), (2913, 7503)]