21502160

素因数分解:

$2^4\times 5^1\times {\mathrm{268777}}^1$

素因数の和:268790

約数の個数: 20

約数和(自身を含む): 49992708

約数和(自身を除く): 28490548

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 268777, 537554, 1075108, 1343885, 2150216, 2687770, 4300432, 5375540, 10751080, 21502160]

約数ペア:

[(1, 21502160), (2, 10751080), (4, 5375540), (5, 4300432), (8, 2687770), (10, 2150216), (16, 1343885), (20, 1075108), (40, 537554), (80, 268777)]