21421379

素因数分解:

$7^3\times {\mathrm{19}}^2\times {\mathrm{173}}^1$

素因数の和:232

約数の個数: 24

約数和(自身を含む): 26517600

約数和(自身を除く): 5096221

約数列:

[1, 7, 19, 49, 133, 173, 343, 361, 931, 1211, 2527, 3287, 6517, 8477, 17689, 23009, 59339, 62453, 123823, 161063, 437171, 1127441, 3060197, 21421379]

約数ペア:

[(1, 21421379), (7, 3060197), (19, 1127441), (49, 437171), (133, 161063), (173, 123823), (343, 62453), (361, 59339), (931, 23009), (1211, 17689), (2527, 8477), (3287, 6517)]