19378520

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{9887}}^1$

素因数の和:9912

約数の個数: 48

約数和(自身を含む): 50725440

約数和(自身を除く): 31346920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 9887, 19774, 39548, 49435, 69209, 79096, 98870, 138418, 197740, 276836, 346045, 395480, 484463, 553672, 692090, 968926, 1384180, 1937852, 2422315, 2768360, 3875704, 4844630, 9689260, 19378520]

約数ペア:

[(1, 19378520), (2, 9689260), (4, 4844630), (5, 3875704), (7, 2768360), (8, 2422315), (10, 1937852), (14, 1384180), (20, 968926), (28, 692090), (35, 553672), (40, 484463), (49, 395480), (56, 346045), (70, 276836), (98, 197740), (140, 138418), (196, 98870), (245, 79096), (280, 69209), (392, 49435), (490, 39548), (980, 19774), (1960, 9887)]