17921979

素因数分解:

$3^5\times {\mathrm{131}}^1\times {\mathrm{563}}^1$

素因数の和:709

約数の個数: 24

約数和(自身を含む): 27099072

約数和(自身を除く): 9177093

約数列:

[1, 3, 9, 27, 81, 131, 243, 393, 563, 1179, 1689, 3537, 5067, 10611, 15201, 31833, 45603, 73753, 136809, 221259, 663777, 1991331, 5973993, 17921979]

約数ペア:

[(1, 17921979), (3, 5973993), (9, 1991331), (27, 663777), (81, 221259), (131, 136809), (243, 73753), (393, 45603), (563, 31833), (1179, 15201), (1689, 10611), (3537, 5067)]