19511840

素因数分解:

$2^5\times 5^1\times {\mathrm{121949}}^1$

素因数の和:121964

約数の個数: 24

約数和(自身を含む): 46097100

約数和(自身を除く): 26585260

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 121949, 243898, 487796, 609745, 975592, 1219490, 1951184, 2438980, 3902368, 4877960, 9755920, 19511840]

約数ペア:

[(1, 19511840), (2, 9755920), (4, 4877960), (5, 3902368), (8, 2438980), (10, 1951184), (16, 1219490), (20, 975592), (32, 609745), (40, 487796), (80, 243898), (160, 121949)]