20977376

素因数分解:

$2^5\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1319}}^1$

素因数の和:1407

約数の個数: 48

約数和(自身を含む): 47900160

約数和(自身を除く): 26922784

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 71, 112, 142, 224, 284, 497, 568, 994, 1136, 1319, 1988, 2272, 2638, 3976, 5276, 7952, 9233, 10552, 15904, 18466, 21104, 36932, 42208, 73864, 93649, 147728, 187298, 295456, 374596, 655543, 749192, 1311086, 1498384, 2622172, 2996768, 5244344, 10488688, 20977376]

約数ペア:

[(1, 20977376), (2, 10488688), (4, 5244344), (7, 2996768), (8, 2622172), (14, 1498384), (16, 1311086), (28, 749192), (32, 655543), (56, 374596), (71, 295456), (112, 187298), (142, 147728), (224, 93649), (284, 73864), (497, 42208), (568, 36932), (994, 21104), (1136, 18466), (1319, 15904), (1988, 10552), (2272, 9233), (2638, 7952), (3976, 5276)]