21743980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{57221}}^1$

素因数の和:57249

約数の個数: 24

約数和(自身を含む): 48066480

約数和(自身を除く): 26322500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 57221, 114442, 228884, 286105, 572210, 1087199, 1144420, 2174398, 4348796, 5435995, 10871990, 21743980]

約数ペア:

[(1, 21743980), (2, 10871990), (4, 5435995), (5, 4348796), (10, 2174398), (19, 1144420), (20, 1087199), (38, 572210), (76, 286105), (95, 228884), (190, 114442), (380, 57221)]