19983440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13147}}^1$

素因数の和:13179

約数の個数: 40

約数和(自身を含む): 48910560

約数和(自身を除く): 28927120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13147, 26294, 52588, 65735, 105176, 131470, 210352, 249793, 262940, 499586, 525880, 999172, 1051760, 1248965, 1998344, 2497930, 3996688, 4995860, 9991720, 19983440]

約数ペア:

[(1, 19983440), (2, 9991720), (4, 4995860), (5, 3996688), (8, 2497930), (10, 1998344), (16, 1248965), (19, 1051760), (20, 999172), (38, 525880), (40, 499586), (76, 262940), (80, 249793), (95, 210352), (152, 131470), (190, 105176), (304, 65735), (380, 52588), (760, 26294), (1520, 13147)]