21406616

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:133

約数の個数: 128

約数和(自身を含む): 55296000

約数和(自身を除く): 33889384

約数列:

[1, 2, 4, 7, 8, 11, 14, 19, 22, 28, 31, 38, 44, 56, 59, 62, 76, 77, 88, 118, 124, 133, 152, 154, 209, 217, 236, 248, 266, 308, 341, 413, 418, 434, 472, 532, 589, 616, 649, 682, 826, 836, 868, 1064, 1121, 1178, 1298, 1364, 1463, 1652, 1672, 1736, 1829, 2242, 2356, 2387, 2596, 2728, 2926, 3304, 3658, 4123, 4484, 4543, 4712, 4774, 5192, 5852, 6479, 7316, 7847, 8246, 8968, 9086, 9548, 11704, 12331, 12803, 12958, 14632, 15694, 16492, 18172, 19096, 20119, 24662, 25606, 25916, 31388, 32984, 34751, 36344, 40238, 45353, 49324, 51212, 51832, 62776, 69502, 80476, 86317, 90706, 98648, 102424, 139004, 140833, 160952, 172634, 181412, 243257, 278008, 281666, 345268, 362824, 382261, 486514, 563332, 690536, 764522, 973028, 1126664, 1529044, 1946056, 2675827, 3058088, 5351654, 10703308, 21406616]

約数ペア:

[(1, 21406616), (2, 10703308), (4, 5351654), (7, 3058088), (8, 2675827), (11, 1946056), (14, 1529044), (19, 1126664), (22, 973028), (28, 764522), (31, 690536), (38, 563332), (44, 486514), (56, 382261), (59, 362824), (62, 345268), (76, 281666), (77, 278008), (88, 243257), (118, 181412), (124, 172634), (133, 160952), (152, 140833), (154, 139004), (209, 102424), (217, 98648), (236, 90706), (248, 86317), (266, 80476), (308, 69502), (341, 62776), (413, 51832), (418, 51212), (434, 49324), (472, 45353), (532, 40238), (589, 36344), (616, 34751), (649, 32984), (682, 31388), (826, 25916), (836, 25606), (868, 24662), (1064, 20119), (1121, 19096), (1178, 18172), (1298, 16492), (1364, 15694), (1463, 14632), (1652, 12958), (1672, 12803), (1736, 12331), (1829, 11704), (2242, 9548), (2356, 9086), (2387, 8968), (2596, 8246), (2728, 7847), (2926, 7316), (3304, 6479), (3658, 5852), (4123, 5192), (4484, 4774), (4543, 4712)]