19578880

素因数分解:

$2^{14}\times 5^1\times {\mathrm{239}}^1$

素因数の和:272

約数の個数: 60

約数和(自身を含む): 47184480

約数和(自身を除く): 27605600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 239, 256, 320, 478, 512, 640, 956, 1024, 1195, 1280, 1912, 2048, 2390, 2560, 3824, 4096, 4780, 5120, 7648, 8192, 9560, 10240, 15296, 16384, 19120, 20480, 30592, 38240, 40960, 61184, 76480, 81920, 122368, 152960, 244736, 305920, 489472, 611840, 978944, 1223680, 1957888, 2447360, 3915776, 4894720, 9789440, 19578880]

約数ペア:

[(1, 19578880), (2, 9789440), (4, 4894720), (5, 3915776), (8, 2447360), (10, 1957888), (16, 1223680), (20, 978944), (32, 611840), (40, 489472), (64, 305920), (80, 244736), (128, 152960), (160, 122368), (239, 81920), (256, 76480), (320, 61184), (478, 40960), (512, 38240), (640, 30592), (956, 20480), (1024, 19120), (1195, 16384), (1280, 15296), (1912, 10240), (2048, 9560), (2390, 8192), (2560, 7648), (3824, 5120), (4096, 4780)]