21861077

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{41}}^1\times {\mathrm{211}}^1$

素因数の和:297

約数の個数: 24

約数和(自身を含む): 27139392

約数和(自身を除く): 5278315

約数列:

[1, 7, 19, 41, 133, 211, 287, 361, 779, 1477, 2527, 4009, 5453, 8651, 14801, 28063, 60557, 76171, 103607, 164369, 533197, 1150583, 3123011, 21861077]

約数ペア:

[(1, 21861077), (7, 3123011), (19, 1150583), (41, 533197), (133, 164369), (211, 103607), (287, 76171), (361, 60557), (779, 28063), (1477, 14801), (2527, 8651), (4009, 5453)]