21416528

素因数分解:

$2^4\times 7^2\times {\mathrm{59}}^1\times {\mathrm{463}}^1$

素因数の和:544

約数の個数: 60

約数和(自身を含む): 49193280

約数和(自身を除く): 27776752

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 59, 98, 112, 118, 196, 236, 392, 413, 463, 472, 784, 826, 926, 944, 1652, 1852, 2891, 3241, 3304, 3704, 5782, 6482, 6608, 7408, 11564, 12964, 22687, 23128, 25928, 27317, 45374, 46256, 51856, 54634, 90748, 109268, 181496, 191219, 218536, 362992, 382438, 437072, 764876, 1338533, 1529752, 2677066, 3059504, 5354132, 10708264, 21416528]

約数ペア:

[(1, 21416528), (2, 10708264), (4, 5354132), (7, 3059504), (8, 2677066), (14, 1529752), (16, 1338533), (28, 764876), (49, 437072), (56, 382438), (59, 362992), (98, 218536), (112, 191219), (118, 181496), (196, 109268), (236, 90748), (392, 54634), (413, 51856), (463, 46256), (472, 45374), (784, 27317), (826, 25928), (926, 23128), (944, 22687), (1652, 12964), (1852, 11564), (2891, 7408), (3241, 6608), (3304, 6482), (3704, 5782)]