19521520

素因数分解:

$2^4\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1021}}^1$

素因数の和:1273

約数の個数: 40

約数和(自身を含む): 45622080

約数和(自身を除く): 26100560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 239, 478, 956, 1021, 1195, 1912, 2042, 2390, 3824, 4084, 4780, 5105, 8168, 9560, 10210, 16336, 19120, 20420, 40840, 81680, 244019, 488038, 976076, 1220095, 1952152, 2440190, 3904304, 4880380, 9760760, 19521520]

約数ペア:

[(1, 19521520), (2, 9760760), (4, 4880380), (5, 3904304), (8, 2440190), (10, 1952152), (16, 1220095), (20, 976076), (40, 488038), (80, 244019), (239, 81680), (478, 40840), (956, 20420), (1021, 19120), (1195, 16336), (1912, 10210), (2042, 9560), (2390, 8168), (3824, 5105), (4084, 4780)]