19802405

素因数分解:

$5^1\times 7^1\times {\mathrm{293}}^1\times {\mathrm{1931}}^1$

素因数の和:2236

約数の個数: 16

約数和(自身を含む): 27264384

約数和(自身を除く): 7461979

約数列:

[1, 5, 7, 35, 293, 1465, 1931, 2051, 9655, 10255, 13517, 67585, 565783, 2828915, 3960481, 19802405]

約数ペア:

[(1, 19802405), (5, 3960481), (7, 2828915), (35, 565783), (293, 67585), (1465, 13517), (1931, 10255), (2051, 9655)]