619371920

素因数分解:

$2^4\times 5^1\times {\mathrm{7742149}}^1$

素因数の和:7742162

約数の個数: 20

約数和(自身を含む): 1440039900

約数和(自身を除く): 820667980

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 7742149, 15484298, 30968596, 38710745, 61937192, 77421490, 123874384, 154842980, 309685960, 619371920]

約数ペア:

[(1, 619371920), (2, 309685960), (4, 154842980), (5, 123874384), (8, 77421490), (10, 61937192), (16, 38710745), (20, 30968596), (40, 15484298), (80, 7742149)]