21084712

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:238

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 24534488

約数列:

[1, 2, 4, 8, 11, 22, 31, 44, 59, 62, 88, 118, 124, 131, 236, 248, 262, 341, 472, 524, 649, 682, 1048, 1298, 1364, 1441, 1829, 2596, 2728, 2882, 3658, 4061, 5192, 5764, 7316, 7729, 8122, 11528, 14632, 15458, 16244, 20119, 30916, 32488, 40238, 44671, 61832, 80476, 85019, 89342, 160952, 170038, 178684, 239599, 340076, 357368, 479198, 680152, 958396, 1916792, 2635589, 5271178, 10542356, 21084712]

約数ペア:

[(1, 21084712), (2, 10542356), (4, 5271178), (8, 2635589), (11, 1916792), (22, 958396), (31, 680152), (44, 479198), (59, 357368), (62, 340076), (88, 239599), (118, 178684), (124, 170038), (131, 160952), (236, 89342), (248, 85019), (262, 80476), (341, 61832), (472, 44671), (524, 40238), (649, 32488), (682, 30916), (1048, 20119), (1298, 16244), (1364, 15458), (1441, 14632), (1829, 11528), (2596, 8122), (2728, 7729), (2882, 7316), (3658, 5764), (4061, 5192)]