21140992

素因数分解:

$2^9\times {\mathrm{157}}^1\times {\mathrm{263}}^1$

素因数の和:438

約数の個数: 40

約数和(自身を含む): 42671376

約数和(自身を除く): 21530384

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 157, 256, 263, 314, 512, 526, 628, 1052, 1256, 2104, 2512, 4208, 5024, 8416, 10048, 16832, 20096, 33664, 40192, 41291, 67328, 80384, 82582, 134656, 165164, 330328, 660656, 1321312, 2642624, 5285248, 10570496, 21140992]

約数ペア:

[(1, 21140992), (2, 10570496), (4, 5285248), (8, 2642624), (16, 1321312), (32, 660656), (64, 330328), (128, 165164), (157, 134656), (256, 82582), (263, 80384), (314, 67328), (512, 41291), (526, 40192), (628, 33664), (1052, 20096), (1256, 16832), (2104, 10048), (2512, 8416), (4208, 5024)]