21369296

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1447}}^1$

素因数の和:1539

約数の個数: 40

約数和(自身を含む): 45247104

約数和(自身を除く): 23877808

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 71, 104, 142, 208, 284, 568, 923, 1136, 1447, 1846, 2894, 3692, 5788, 7384, 11576, 14768, 18811, 23152, 37622, 75244, 102737, 150488, 205474, 300976, 410948, 821896, 1335581, 1643792, 2671162, 5342324, 10684648, 21369296]

約数ペア:

[(1, 21369296), (2, 10684648), (4, 5342324), (8, 2671162), (13, 1643792), (16, 1335581), (26, 821896), (52, 410948), (71, 300976), (104, 205474), (142, 150488), (208, 102737), (284, 75244), (568, 37622), (923, 23152), (1136, 18811), (1447, 14768), (1846, 11576), (2894, 7384), (3692, 5788)]