20961458

素因数分解:

$2^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{16823}}^1$

素因数の和:16921

約数の個数: 16

約数和(自身を含む): 36339840

約数和(自身を除く): 15378382

約数列:

[1, 2, 7, 14, 89, 178, 623, 1246, 16823, 33646, 117761, 235522, 1497247, 2994494, 10480729, 20961458]

約数ペア:

[(1, 20961458), (2, 10480729), (7, 2994494), (14, 1497247), (89, 235522), (178, 117761), (623, 33646), (1246, 16823)]