21587440

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{5507}}^1$

素因数の和:5534

約数の個数: 60

約数和(自身を含む): 58395816

約数和(自身を除く): 36808376

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 5507, 11014, 22028, 27535, 38549, 44056, 55070, 77098, 88112, 110140, 154196, 192745, 220280, 269843, 308392, 385490, 440560, 539686, 616784, 770980, 1079372, 1349215, 1541960, 2158744, 2698430, 3083920, 4317488, 5396860, 10793720, 21587440]

約数ペア:

[(1, 21587440), (2, 10793720), (4, 5396860), (5, 4317488), (7, 3083920), (8, 2698430), (10, 2158744), (14, 1541960), (16, 1349215), (20, 1079372), (28, 770980), (35, 616784), (40, 539686), (49, 440560), (56, 385490), (70, 308392), (80, 269843), (98, 220280), (112, 192745), (140, 154196), (196, 110140), (245, 88112), (280, 77098), (392, 55070), (490, 44056), (560, 38549), (784, 27535), (980, 22028), (1960, 11014), (3920, 5507)]