21809372

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{5309}}^1$

素因数の和:5405

約数の個数: 24

約数和(自身を含む): 41630400

約数和(自身を除く): 19821028

約数列:

[1, 2, 4, 13, 26, 52, 79, 158, 316, 1027, 2054, 4108, 5309, 10618, 21236, 69017, 138034, 276068, 419411, 838822, 1677644, 5452343, 10904686, 21809372]

約数ペア:

[(1, 21809372), (2, 10904686), (4, 5452343), (13, 1677644), (26, 838822), (52, 419411), (79, 276068), (158, 138034), (316, 69017), (1027, 21236), (2054, 10618), (4108, 5309)]