20921552

素因数分解:

$2^4\times {\mathrm{541}}^1\times {\mathrm{2417}}^1$

素因数の和:2966

約数の個数: 20

約数和(自身を含む): 40627236

約数和(自身を除く): 19705684

約数列:

[1, 2, 4, 8, 16, 541, 1082, 2164, 2417, 4328, 4834, 8656, 9668, 19336, 38672, 1307597, 2615194, 5230388, 10460776, 20921552]

約数ペア:

[(1, 20921552), (2, 10460776), (4, 5230388), (8, 2615194), (16, 1307597), (541, 38672), (1082, 19336), (2164, 9668), (2417, 8656), (4328, 4834)]