19369780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{223}}^1$

素因数の和:376

約数の個数: 48

約数和(自身を含む): 42223104

約数和(自身を除く): 22853324

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 101, 172, 202, 215, 223, 404, 430, 446, 505, 860, 892, 1010, 1115, 2020, 2230, 4343, 4460, 8686, 9589, 17372, 19178, 21715, 22523, 38356, 43430, 45046, 47945, 86860, 90092, 95890, 112615, 191780, 225230, 450460, 968489, 1936978, 3873956, 4842445, 9684890, 19369780]

約数ペア:

[(1, 19369780), (2, 9684890), (4, 4842445), (5, 3873956), (10, 1936978), (20, 968489), (43, 450460), (86, 225230), (101, 191780), (172, 112615), (202, 95890), (215, 90092), (223, 86860), (404, 47945), (430, 45046), (446, 43430), (505, 38356), (860, 22523), (892, 21715), (1010, 19178), (1115, 17372), (2020, 9589), (2230, 8686), (4343, 4460)]