28641890

素因数分解:

$2^1\times 5^1\times {\mathrm{1601}}^1\times {\mathrm{1789}}^1$

素因数の和:3397

約数の個数: 16

約数和(自身を含む): 51616440

約数和(自身を除く): 22974550

約数列:

[1, 2, 5, 10, 1601, 1789, 3202, 3578, 8005, 8945, 16010, 17890, 2864189, 5728378, 14320945, 28641890]

約数ペア:

[(1, 28641890), (2, 14320945), (5, 5728378), (10, 2864189), (1601, 17890), (1789, 16010), (3202, 8945), (3578, 8005)]