1979440

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{227}}^1$

素因数の和:349

約数の個数: 40

約数和(自身を含む): 4664880

約数和(自身を除く): 2685440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 227, 436, 454, 545, 872, 908, 1090, 1135, 1744, 1816, 2180, 2270, 3632, 4360, 4540, 8720, 9080, 18160, 24743, 49486, 98972, 123715, 197944, 247430, 395888, 494860, 989720, 1979440]

約数ペア:

[(1, 1979440), (2, 989720), (4, 494860), (5, 395888), (8, 247430), (10, 197944), (16, 123715), (20, 98972), (40, 49486), (80, 24743), (109, 18160), (218, 9080), (227, 8720), (436, 4540), (454, 4360), (545, 3632), (872, 2270), (908, 2180), (1090, 1816), (1135, 1744)]