15720880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{419}}^1$

素因数の和:506

約数の個数: 80

約数和(自身を含む): 42497280

約数和(自身を除く): 26776400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 67, 70, 80, 112, 134, 140, 268, 280, 335, 419, 469, 536, 560, 670, 838, 938, 1072, 1340, 1676, 1876, 2095, 2345, 2680, 2933, 3352, 3752, 4190, 4690, 5360, 5866, 6704, 7504, 8380, 9380, 11732, 14665, 16760, 18760, 23464, 28073, 29330, 33520, 37520, 46928, 56146, 58660, 112292, 117320, 140365, 196511, 224584, 234640, 280730, 393022, 449168, 561460, 786044, 982555, 1122920, 1572088, 1965110, 2245840, 3144176, 3930220, 7860440, 15720880]

約数ペア:

[(1, 15720880), (2, 7860440), (4, 3930220), (5, 3144176), (7, 2245840), (8, 1965110), (10, 1572088), (14, 1122920), (16, 982555), (20, 786044), (28, 561460), (35, 449168), (40, 393022), (56, 280730), (67, 234640), (70, 224584), (80, 196511), (112, 140365), (134, 117320), (140, 112292), (268, 58660), (280, 56146), (335, 46928), (419, 37520), (469, 33520), (536, 29330), (560, 28073), (670, 23464), (838, 18760), (938, 16760), (1072, 14665), (1340, 11732), (1676, 9380), (1876, 8380), (2095, 7504), (2345, 6704), (2680, 5866), (2933, 5360), (3352, 4690), (3752, 4190)]