21250970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163469}}^1$

素因数の和:163489

約数の個数: 16

約数和(自身を含む): 41194440

約数和(自身を除く): 19943470

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 163469, 326938, 817345, 1634690, 2125097, 4250194, 10625485, 21250970]

約数ペア:

[(1, 21250970), (2, 10625485), (5, 4250194), (10, 2125097), (13, 1634690), (26, 817345), (65, 326938), (130, 163469)]