20970531

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{83}}^1\times {\mathrm{419}}^1$

素因数の和:575

約数の個数: 24

約数和(自身を含む): 31187520

約数和(自身を除く): 10216989

約数列:

[1, 3, 9, 67, 83, 201, 249, 419, 603, 747, 1257, 3771, 5561, 16683, 28073, 34777, 50049, 84219, 104331, 252657, 312993, 2330059, 6990177, 20970531]

約数ペア:

[(1, 20970531), (3, 6990177), (9, 2330059), (67, 312993), (83, 252657), (201, 104331), (249, 84219), (419, 50049), (603, 34777), (747, 28073), (1257, 16683), (3771, 5561)]