21300003

素因数分解:

$3^4\times {\mathrm{59}}^1\times {\mathrm{4457}}^1$

素因数の和:4528

約数の個数: 20

約数和(自身を含む): 32365080

約数和(自身を除く): 11065077

約数列:

[1, 3, 9, 27, 59, 81, 177, 531, 1593, 4457, 4779, 13371, 40113, 120339, 262963, 361017, 788889, 2366667, 7100001, 21300003]

約数ペア:

[(1, 21300003), (3, 7100001), (9, 2366667), (27, 788889), (59, 361017), (81, 262963), (177, 120339), (531, 40113), (1593, 13371), (4457, 4779)]