21994480

素因数分解:

$2^4\times 5^1\times {\mathrm{274931}}^1$

素因数の和:274944

約数の個数: 20

約数和(自身を含む): 51137352

約数和(自身を除く): 29142872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 274931, 549862, 1099724, 1374655, 2199448, 2749310, 4398896, 5498620, 10997240, 21994480]

約数ペア:

[(1, 21994480), (2, 10997240), (4, 5498620), (5, 4398896), (8, 2749310), (10, 2199448), (16, 1374655), (20, 1099724), (40, 549862), (80, 274931)]