19310440

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1$

素因数の和:266

約数の個数: 64

約数和(自身を含む): 45302400

約数和(自身を除く): 25991960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 103, 109, 172, 206, 215, 218, 344, 412, 430, 436, 515, 545, 824, 860, 872, 1030, 1090, 1720, 2060, 2180, 4120, 4360, 4429, 4687, 8858, 9374, 11227, 17716, 18748, 22145, 22454, 23435, 35432, 37496, 44290, 44908, 46870, 56135, 88580, 89816, 93740, 112270, 177160, 187480, 224540, 449080, 482761, 965522, 1931044, 2413805, 3862088, 4827610, 9655220, 19310440]

約数ペア:

[(1, 19310440), (2, 9655220), (4, 4827610), (5, 3862088), (8, 2413805), (10, 1931044), (20, 965522), (40, 482761), (43, 449080), (86, 224540), (103, 187480), (109, 177160), (172, 112270), (206, 93740), (215, 89816), (218, 88580), (344, 56135), (412, 46870), (430, 44908), (436, 44290), (515, 37496), (545, 35432), (824, 23435), (860, 22454), (872, 22145), (1030, 18748), (1090, 17716), (1720, 11227), (2060, 9374), (2180, 8858), (4120, 4687), (4360, 4429)]