21371504

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{83}}^1$

素因数の和:139

約数の個数: 120

約数和(自身を含む): 55413120

約数和(自身を除く): 34041616

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 19, 22, 28, 38, 44, 56, 76, 77, 83, 88, 112, 121, 133, 152, 154, 166, 176, 209, 242, 266, 304, 308, 332, 418, 484, 532, 581, 616, 664, 836, 847, 913, 968, 1064, 1162, 1232, 1328, 1463, 1577, 1672, 1694, 1826, 1936, 2128, 2299, 2324, 2926, 3154, 3344, 3388, 3652, 4598, 4648, 5852, 6308, 6391, 6776, 7304, 9196, 9296, 10043, 11039, 11704, 12616, 12782, 13552, 14608, 16093, 17347, 18392, 20086, 22078, 23408, 25232, 25564, 32186, 34694, 36784, 40172, 44156, 51128, 64372, 69388, 70301, 80344, 88312, 102256, 121429, 128744, 138776, 140602, 160688, 176624, 190817, 242858, 257488, 277552, 281204, 381634, 485716, 562408, 763268, 971432, 1124816, 1335719, 1526536, 1942864, 2671438, 3053072, 5342876, 10685752, 21371504]

約数ペア:

[(1, 21371504), (2, 10685752), (4, 5342876), (7, 3053072), (8, 2671438), (11, 1942864), (14, 1526536), (16, 1335719), (19, 1124816), (22, 971432), (28, 763268), (38, 562408), (44, 485716), (56, 381634), (76, 281204), (77, 277552), (83, 257488), (88, 242858), (112, 190817), (121, 176624), (133, 160688), (152, 140602), (154, 138776), (166, 128744), (176, 121429), (209, 102256), (242, 88312), (266, 80344), (304, 70301), (308, 69388), (332, 64372), (418, 51128), (484, 44156), (532, 40172), (581, 36784), (616, 34694), (664, 32186), (836, 25564), (847, 25232), (913, 23408), (968, 22078), (1064, 20086), (1162, 18392), (1232, 17347), (1328, 16093), (1463, 14608), (1577, 13552), (1672, 12782), (1694, 12616), (1826, 11704), (1936, 11039), (2128, 10043), (2299, 9296), (2324, 9196), (2926, 7304), (3154, 6776), (3344, 6391), (3388, 6308), (3652, 5852), (4598, 4648)]