21827505

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{4423}}^1$

素因数の和:4485

約数の個数: 32

約数和(自身を含む): 40771584

約数和(自身を除く): 18944079

約数列:

[1, 3, 5, 7, 15, 21, 35, 47, 105, 141, 235, 329, 705, 987, 1645, 4423, 4935, 13269, 22115, 30961, 66345, 92883, 154805, 207881, 464415, 623643, 1039405, 1455167, 3118215, 4365501, 7275835, 21827505]

約数ペア:

[(1, 21827505), (3, 7275835), (5, 4365501), (7, 3118215), (15, 1455167), (21, 1039405), (35, 623643), (47, 464415), (105, 207881), (141, 154805), (235, 92883), (329, 66345), (705, 30961), (987, 22115), (1645, 13269), (4423, 4935)]