20484940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20903}}^1$

素因数の和:20926

約数の個数: 36

約数和(自身を含む): 50044176

約数和(自身を除く): 29559236

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20903, 41806, 83612, 104515, 146321, 209030, 292642, 418060, 585284, 731605, 1024247, 1463210, 2048494, 2926420, 4096988, 5121235, 10242470, 20484940]

約数ペア:

[(1, 20484940), (2, 10242470), (4, 5121235), (5, 4096988), (7, 2926420), (10, 2048494), (14, 1463210), (20, 1024247), (28, 731605), (35, 585284), (49, 418060), (70, 292642), (98, 209030), (140, 146321), (196, 104515), (245, 83612), (490, 41806), (980, 20903)]