19648240

素因数分解:

$2^4\times 5^1\times {\mathrm{449}}^1\times {\mathrm{547}}^1$

素因数の和:1009

約数の個数: 40

約数和(自身を含む): 45867600

約数和(自身を除く): 26219360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 449, 547, 898, 1094, 1796, 2188, 2245, 2735, 3592, 4376, 4490, 5470, 7184, 8752, 8980, 10940, 17960, 21880, 35920, 43760, 245603, 491206, 982412, 1228015, 1964824, 2456030, 3929648, 4912060, 9824120, 19648240]

約数ペア:

[(1, 19648240), (2, 9824120), (4, 4912060), (5, 3929648), (8, 2456030), (10, 1964824), (16, 1228015), (20, 982412), (40, 491206), (80, 245603), (449, 43760), (547, 35920), (898, 21880), (1094, 17960), (1796, 10940), (2188, 8980), (2245, 8752), (2735, 7184), (3592, 5470), (4376, 4490)]