21403804940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{152884321}}^1$

素因数の和:152884337

約数の個数: 24

約数和(自身を含む): 51369132192

約数和(自身を除く): 29965327252

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 152884321, 305768642, 611537284, 764421605, 1070190247, 1528843210, 2140380494, 3057686420, 4280760988, 5350951235, 10701902470, 21403804940]

約数ペア:

[(1, 21403804940), (2, 10701902470), (4, 5350951235), (5, 4280760988), (7, 3057686420), (10, 2140380494), (14, 1528843210), (20, 1070190247), (28, 764421605), (35, 611537284), (70, 305768642), (140, 152884321)]