21569260

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{63439}}^1$

素因数の和:63465

約数の個数: 24

約数和(自身を含む): 47960640

約数和(自身を除く): 26391380

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 63439, 126878, 253756, 317195, 634390, 1078463, 1268780, 2156926, 4313852, 5392315, 10784630, 21569260]

約数ペア:

[(1, 21569260), (2, 10784630), (4, 5392315), (5, 4313852), (10, 2156926), (17, 1268780), (20, 1078463), (34, 634390), (68, 317195), (85, 253756), (170, 126878), (340, 63439)]