21678978

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{827}}^1$

素因数の和:1106

約数の個数: 32

約数和(自身を含む): 46142784

約数和(自身を除く): 24463806

約数列:

[1, 2, 3, 6, 17, 34, 51, 102, 257, 514, 771, 827, 1542, 1654, 2481, 4369, 4962, 8738, 13107, 14059, 26214, 28118, 42177, 84354, 212539, 425078, 637617, 1275234, 3613163, 7226326, 10839489, 21678978]

約数ペア:

[(1, 21678978), (2, 10839489), (3, 7226326), (6, 3613163), (17, 1275234), (34, 637617), (51, 425078), (102, 212539), (257, 84354), (514, 42177), (771, 28118), (827, 26214), (1542, 14059), (1654, 13107), (2481, 8738), (4369, 4962)]