20281856

素因数分解:

$2^9\times 7^1\times {\mathrm{5659}}^1$

素因数の和:5684

約数の個数: 40

約数和(自身を含む): 46321440

約数和(自身を除く): 26039584

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 512, 896, 1792, 3584, 5659, 11318, 22636, 39613, 45272, 79226, 90544, 158452, 181088, 316904, 362176, 633808, 724352, 1267616, 1448704, 2535232, 2897408, 5070464, 10140928, 20281856]

約数ペア:

[(1, 20281856), (2, 10140928), (4, 5070464), (7, 2897408), (8, 2535232), (14, 1448704), (16, 1267616), (28, 724352), (32, 633808), (56, 362176), (64, 316904), (112, 181088), (128, 158452), (224, 90544), (256, 79226), (448, 45272), (512, 39613), (896, 22636), (1792, 11318), (3584, 5659)]