21493552

素因数分解:

$2^4\times {\mathrm{271}}^1\times {\mathrm{4957}}^1$

素因数の和:5236

約数の個数: 20

約数和(自身を含む): 41805856

約数和(自身を除く): 20312304

約数列:

[1, 2, 4, 8, 16, 271, 542, 1084, 2168, 4336, 4957, 9914, 19828, 39656, 79312, 1343347, 2686694, 5373388, 10746776, 21493552]

約数ペア:

[(1, 21493552), (2, 10746776), (4, 5373388), (8, 2686694), (16, 1343347), (271, 79312), (542, 39656), (1084, 19828), (2168, 9914), (4336, 4957)]