18200680

素因数分解:

$2^3\times 5^1\times {\mathrm{353}}^1\times {\mathrm{1289}}^1$

素因数の和:1653

約数の個数: 32

約数和(自身を含む): 41099400

約数和(自身を除く): 22898720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 353, 706, 1289, 1412, 1765, 2578, 2824, 3530, 5156, 6445, 7060, 10312, 12890, 14120, 25780, 51560, 455017, 910034, 1820068, 2275085, 3640136, 4550170, 9100340, 18200680]

約数ペア:

[(1, 18200680), (2, 9100340), (4, 4550170), (5, 3640136), (8, 2275085), (10, 1820068), (20, 910034), (40, 455017), (353, 51560), (706, 25780), (1289, 14120), (1412, 12890), (1765, 10312), (2578, 7060), (2824, 6445), (3530, 5156)]