289923760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{517721}}^1$

素因数の和:517741

約数の個数: 40

約数和(自身を含む): 770370336

約数和(自身を除く): 480446576

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 517721, 1035442, 2070884, 2588605, 3624047, 4141768, 5177210, 7248094, 8283536, 10354420, 14496188, 18120235, 20708840, 28992376, 36240470, 41417680, 57984752, 72480940, 144961880, 289923760]

約数ペア:

[(1, 289923760), (2, 144961880), (4, 72480940), (5, 57984752), (7, 41417680), (8, 36240470), (10, 28992376), (14, 20708840), (16, 18120235), (20, 14496188), (28, 10354420), (35, 8283536), (40, 7248094), (56, 5177210), (70, 4141768), (80, 3624047), (112, 2588605), (140, 2070884), (280, 1035442), (560, 517721)]