12840890

素因数分解:

$2^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{3301}}^1$

素因数の和:3697

約数の個数: 16

約数和(自身を含む): 23180040

約数和(自身を除く): 10339150

約数列:

[1, 2, 5, 10, 389, 778, 1945, 3301, 3890, 6602, 16505, 33010, 1284089, 2568178, 6420445, 12840890]

約数ペア:

[(1, 12840890), (2, 6420445), (5, 2568178), (10, 1284089), (389, 33010), (778, 16505), (1945, 6602), (3301, 3890)]