30909921

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{20731}}^1$

素因数の和:20812

約数の個数: 16

約数和(自身を含む): 47766528

約数和(自身を除く): 16856607

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 20731, 62193, 145117, 435351, 1471901, 4415703, 10303307, 30909921]

約数ペア:

[(1, 30909921), (3, 10303307), (7, 4415703), (21, 1471901), (71, 435351), (213, 145117), (497, 62193), (1491, 20731)]