20728164

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{397}}^1$

素因数の和:652

約数の個数: 48

約数和(自身を含む): 51262400

約数和(自身を除く): 30534236

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 228, 229, 397, 458, 687, 794, 916, 1191, 1374, 1588, 2382, 2748, 4351, 4764, 7543, 8702, 13053, 15086, 17404, 22629, 26106, 30172, 45258, 52212, 90516, 90913, 181826, 272739, 363652, 545478, 1090956, 1727347, 3454694, 5182041, 6909388, 10364082, 20728164]

約数ペア:

[(1, 20728164), (2, 10364082), (3, 6909388), (4, 5182041), (6, 3454694), (12, 1727347), (19, 1090956), (38, 545478), (57, 363652), (76, 272739), (114, 181826), (228, 90913), (229, 90516), (397, 52212), (458, 45258), (687, 30172), (794, 26106), (916, 22629), (1191, 17404), (1374, 15086), (1588, 13053), (2382, 8702), (2748, 7543), (4351, 4764)]