278340220

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{127679}}^1$

素因数の和:127797

約数の個数: 24

約数和(自身を含む): 589881600

約数和(自身を除く): 311541380

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 127679, 255358, 510716, 638395, 1276790, 2553580, 13917011, 27834022, 55668044, 69585055, 139170110, 278340220]

約数ペア:

[(1, 278340220), (2, 139170110), (4, 69585055), (5, 55668044), (10, 27834022), (20, 13917011), (109, 2553580), (218, 1276790), (436, 638395), (545, 510716), (1090, 255358), (2180, 127679)]