20813295

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19543}}^1$

素因数の和:19622

約数の個数: 16

約数和(自身を含む): 33772032

約数和(自身を除く): 12958737

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 19543, 58629, 97715, 293145, 1387553, 4162659, 6937765, 20813295]

約数ペア:

[(1, 20813295), (3, 6937765), (5, 4162659), (15, 1387553), (71, 293145), (213, 97715), (355, 58629), (1065, 19543)]