21076377

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{523}}^1$

素因数の和:653

約数の個数: 32

約数和(自身を含む): 34206720

約数和(自身を除く): 13130343

約数列:

[1, 3, 7, 19, 21, 57, 101, 133, 303, 399, 523, 707, 1569, 1919, 2121, 3661, 5757, 9937, 10983, 13433, 29811, 40299, 52823, 69559, 158469, 208677, 369761, 1003637, 1109283, 3010911, 7025459, 21076377]

約数ペア:

[(1, 21076377), (3, 7025459), (7, 3010911), (19, 1109283), (21, 1003637), (57, 369761), (101, 208677), (133, 158469), (303, 69559), (399, 52823), (523, 40299), (707, 29811), (1569, 13433), (1919, 10983), (2121, 9937), (3661, 5757)]