219777980

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{73751}}^1$

素因数の和:73909

約数の個数: 24

約数和(自身を含む): 464637600

約数和(自身を除く): 244859620

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 73751, 147502, 295004, 368755, 737510, 1475020, 10988899, 21977798, 43955596, 54944495, 109888990, 219777980]

約数ペア:

[(1, 219777980), (2, 109888990), (4, 54944495), (5, 43955596), (10, 21977798), (20, 10988899), (149, 1475020), (298, 737510), (596, 368755), (745, 295004), (1490, 147502), (2980, 73751)]