21056516

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{1319}}^1$

素因数の和:1643

約数の個数: 24

約数和(自身を含む): 39842880

約数和(自身を除く): 18786364

約数列:

[1, 2, 4, 13, 26, 52, 307, 614, 1228, 1319, 2638, 3991, 5276, 7982, 15964, 17147, 34294, 68588, 404933, 809866, 1619732, 5264129, 10528258, 21056516]

約数ペア:

[(1, 21056516), (2, 10528258), (4, 5264129), (13, 1619732), (26, 809866), (52, 404933), (307, 68588), (614, 34294), (1228, 17147), (1319, 15964), (2638, 7982), (3991, 5276)]