20177996979

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{50571421}}^1$

素因数の和:50571450

約数の個数: 16

約数和(自身を含む): 32365710080

約数和(自身を除く): 12187713101

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 50571421, 151714263, 353999947, 960856999, 1061999841, 2882570997, 6725998993, 20177996979]

約数ペア:

[(1, 20177996979), (3, 6725998993), (7, 2882570997), (19, 1061999841), (21, 960856999), (57, 353999947), (133, 151714263), (399, 50571421)]