15624640

素因数分解:

$2^6\times 5^1\times {\mathrm{157}}^1\times {\mathrm{311}}^1$

素因数の和:485

約数の個数: 56

約数和(自身を含む): 37563552

約数和(自身を除く): 21938912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 157, 160, 311, 314, 320, 622, 628, 785, 1244, 1256, 1555, 1570, 2488, 2512, 3110, 3140, 4976, 5024, 6220, 6280, 9952, 10048, 12440, 12560, 19904, 24880, 25120, 48827, 49760, 50240, 97654, 99520, 195308, 244135, 390616, 488270, 781232, 976540, 1562464, 1953080, 3124928, 3906160, 7812320, 15624640]

約数ペア:

[(1, 15624640), (2, 7812320), (4, 3906160), (5, 3124928), (8, 1953080), (10, 1562464), (16, 976540), (20, 781232), (32, 488270), (40, 390616), (64, 244135), (80, 195308), (157, 99520), (160, 97654), (311, 50240), (314, 49760), (320, 48827), (622, 25120), (628, 24880), (785, 19904), (1244, 12560), (1256, 12440), (1555, 10048), (1570, 9952), (2488, 6280), (2512, 6220), (3110, 5024), (3140, 4976)]