19284280

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4423}}^1$

素因数の和:4543

約数の個数: 32

約数和(自身を含む): 43797600

約数和(自身を除く): 24513320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 4423, 8846, 17692, 22115, 35384, 44230, 88460, 176920, 482107, 964214, 1928428, 2410535, 3856856, 4821070, 9642140, 19284280]

約数ペア:

[(1, 19284280), (2, 9642140), (4, 4821070), (5, 3856856), (8, 2410535), (10, 1928428), (20, 964214), (40, 482107), (109, 176920), (218, 88460), (436, 44230), (545, 35384), (872, 22115), (1090, 17692), (2180, 8846), (4360, 4423)]