20969984

素因数分解:

$2^9\times 7^1\times {\mathrm{5851}}^1$

素因数の和:5876

約数の個数: 40

約数和(自身を含む): 47892768

約数和(自身を除く): 26922784

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 512, 896, 1792, 3584, 5851, 11702, 23404, 40957, 46808, 81914, 93616, 163828, 187232, 327656, 374464, 655312, 748928, 1310624, 1497856, 2621248, 2995712, 5242496, 10484992, 20969984]

約数ペア:

[(1, 20969984), (2, 10484992), (4, 5242496), (7, 2995712), (8, 2621248), (14, 1497856), (16, 1310624), (28, 748928), (32, 655312), (56, 374464), (64, 327656), (112, 187232), (128, 163828), (224, 93616), (256, 81914), (448, 46808), (512, 40957), (896, 23404), (1792, 11702), (3584, 5851)]