15321040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{251}}^1$

素因数の和:380

約数の個数: 80

約数和(自身を含む): 41247360

約数和(自身を除く): 25926320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 109, 112, 140, 218, 251, 280, 436, 502, 545, 560, 763, 872, 1004, 1090, 1255, 1526, 1744, 1757, 2008, 2180, 2510, 3052, 3514, 3815, 4016, 4360, 5020, 6104, 7028, 7630, 8720, 8785, 10040, 12208, 14056, 15260, 17570, 20080, 27359, 28112, 30520, 35140, 54718, 61040, 70280, 109436, 136795, 140560, 191513, 218872, 273590, 383026, 437744, 547180, 766052, 957565, 1094360, 1532104, 1915130, 2188720, 3064208, 3830260, 7660520, 15321040]

約数ペア:

[(1, 15321040), (2, 7660520), (4, 3830260), (5, 3064208), (7, 2188720), (8, 1915130), (10, 1532104), (14, 1094360), (16, 957565), (20, 766052), (28, 547180), (35, 437744), (40, 383026), (56, 273590), (70, 218872), (80, 191513), (109, 140560), (112, 136795), (140, 109436), (218, 70280), (251, 61040), (280, 54718), (436, 35140), (502, 30520), (545, 28112), (560, 27359), (763, 20080), (872, 17570), (1004, 15260), (1090, 14056), (1255, 12208), (1526, 10040), (1744, 8785), (1757, 8720), (2008, 7630), (2180, 7028), (2510, 6104), (3052, 5020), (3514, 4360), (3815, 4016)]