20329281

素因数分解:

$3^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{2137}}^1$

素因数の和:2301

約数の個数: 24

約数和(自身を含む): 33797504

約数和(自身を除く): 13468223

約数列:

[1, 3, 7, 9, 21, 63, 151, 453, 1057, 1359, 2137, 3171, 6411, 9513, 14959, 19233, 44877, 134631, 322687, 968061, 2258809, 2904183, 6776427, 20329281]

約数ペア:

[(1, 20329281), (3, 6776427), (7, 2904183), (9, 2258809), (21, 968061), (63, 322687), (151, 134631), (453, 44877), (1057, 19233), (1359, 14959), (2137, 9513), (3171, 6411)]