21650480

素因数分解:

$2^4\times 5^1\times {\mathrm{270631}}^1$

素因数の和:270644

約数の個数: 20

約数和(自身を含む): 50337552

約数和(自身を除く): 28687072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 270631, 541262, 1082524, 1353155, 2165048, 2706310, 4330096, 5412620, 10825240, 21650480]

約数ペア:

[(1, 21650480), (2, 10825240), (4, 5412620), (5, 4330096), (8, 2706310), (10, 2165048), (16, 1353155), (20, 1082524), (40, 541262), (80, 270631)]