25681780

素因数分解:

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

素因数の和:3699

約数の個数: 24

約数和(自身を含む): 54086760

約数和(自身を除く): 28404980

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 3301, 3890, 6602, 7780, 13204, 16505, 33010, 66020, 1284089, 2568178, 5136356, 6420445, 12840890, 25681780]

約数ペア:

[(1, 25681780), (2, 12840890), (4, 6420445), (5, 5136356), (10, 2568178), (20, 1284089), (389, 66020), (778, 33010), (1556, 16505), (1945, 13204), (3301, 7780), (3890, 6602)]