21856923

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{331}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 37290240

約数和(自身を除く): 15433317

約数列:

[1, 3, 9, 11, 23, 29, 33, 69, 87, 99, 207, 253, 261, 319, 331, 667, 759, 957, 993, 2001, 2277, 2871, 2979, 3641, 6003, 7337, 7613, 9599, 10923, 22011, 22839, 28797, 32769, 66033, 68517, 83743, 86391, 105589, 220777, 251229, 316767, 662331, 753687, 950301, 1986993, 2428547, 7285641, 21856923]

約数ペア:

[(1, 21856923), (3, 7285641), (9, 2428547), (11, 1986993), (23, 950301), (29, 753687), (33, 662331), (69, 316767), (87, 251229), (99, 220777), (207, 105589), (253, 86391), (261, 83743), (319, 68517), (331, 66033), (667, 32769), (759, 28797), (957, 22839), (993, 22011), (2001, 10923), (2277, 9599), (2871, 7613), (2979, 7337), (3641, 6003)]