138778220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{991273}}^1$

素因数の和:991289

約数の個数: 24

約数和(自身を含む): 333068064

約数和(自身を除く): 194289844

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 991273, 1982546, 3965092, 4956365, 6938911, 9912730, 13877822, 19825460, 27755644, 34694555, 69389110, 138778220]

約数ペア:

[(1, 138778220), (2, 69389110), (4, 34694555), (5, 27755644), (7, 19825460), (10, 13877822), (14, 9912730), (20, 6938911), (28, 4956365), (35, 3965092), (70, 1982546), (140, 991273)]