21391456

素因数分解:

$2^5\times {\mathrm{239}}^1\times {\mathrm{2797}}^1$

素因数の和:3046

約数の個数: 24

約数和(自身を含む): 42305760

約数和(自身を除く): 20914304

約数列:

[1, 2, 4, 8, 16, 32, 239, 478, 956, 1912, 2797, 3824, 5594, 7648, 11188, 22376, 44752, 89504, 668483, 1336966, 2673932, 5347864, 10695728, 21391456]

約数ペア:

[(1, 21391456), (2, 10695728), (4, 5347864), (8, 2673932), (16, 1336966), (32, 668483), (239, 89504), (478, 44752), (956, 22376), (1912, 11188), (2797, 7648), (3824, 5594)]