21687588

素因数分解:

$2^2\times 3^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{271}}^1$

素因数の和:319

約数の個数: 120

約数和(自身を含む): 64507520

約数和(自身を除く): 42819932

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 19, 26, 27, 36, 38, 39, 52, 54, 57, 76, 78, 81, 108, 114, 117, 156, 162, 171, 228, 234, 247, 271, 324, 342, 351, 468, 494, 513, 542, 684, 702, 741, 813, 988, 1026, 1053, 1084, 1404, 1482, 1539, 1626, 2052, 2106, 2223, 2439, 2964, 3078, 3252, 3523, 4212, 4446, 4878, 5149, 6156, 6669, 7046, 7317, 8892, 9756, 10298, 10569, 13338, 14092, 14634, 15447, 20007, 20596, 21138, 21951, 26676, 29268, 30894, 31707, 40014, 42276, 43902, 46341, 61788, 63414, 66937, 80028, 87804, 92682, 95121, 126828, 133874, 139023, 185364, 190242, 200811, 267748, 278046, 285363, 380484, 401622, 417069, 556092, 570726, 602433, 803244, 834138, 1141452, 1204866, 1668276, 1807299, 2409732, 3614598, 5421897, 7229196, 10843794, 21687588]

約数ペア:

[(1, 21687588), (2, 10843794), (3, 7229196), (4, 5421897), (6, 3614598), (9, 2409732), (12, 1807299), (13, 1668276), (18, 1204866), (19, 1141452), (26, 834138), (27, 803244), (36, 602433), (38, 570726), (39, 556092), (52, 417069), (54, 401622), (57, 380484), (76, 285363), (78, 278046), (81, 267748), (108, 200811), (114, 190242), (117, 185364), (156, 139023), (162, 133874), (171, 126828), (228, 95121), (234, 92682), (247, 87804), (271, 80028), (324, 66937), (342, 63414), (351, 61788), (468, 46341), (494, 43902), (513, 42276), (542, 40014), (684, 31707), (702, 30894), (741, 29268), (813, 26676), (988, 21951), (1026, 21138), (1053, 20596), (1084, 20007), (1404, 15447), (1482, 14634), (1539, 14092), (1626, 13338), (2052, 10569), (2106, 10298), (2223, 9756), (2439, 8892), (2964, 7317), (3078, 7046), (3252, 6669), (3523, 6156), (4212, 5149), (4446, 4878)]