21051578877

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{223}}^1\times {\mathrm{379}}^1\times {\mathrm{409}}^1$

素因数の和:1050

約数の個数: 64

約数和(自身を含む): 33503232000

約数和(自身を除く): 12451653123

約数列:

[1, 3, 7, 21, 29, 87, 203, 223, 379, 409, 609, 669, 1137, 1227, 1561, 2653, 2863, 4683, 6467, 7959, 8589, 10991, 11861, 19401, 32973, 35583, 45269, 76937, 83027, 84517, 91207, 135807, 155011, 230811, 249081, 253551, 273621, 465033, 591619, 638449, 1085077, 1774857, 1915347, 2450993, 2645003, 3255231, 4495319, 7352979, 7935009, 13485957, 17156951, 18515021, 31467233, 34567453, 51470853, 55545063, 94401699, 103702359, 241972171, 725916513, 1002456137, 3007368411, 7017192959, 21051578877]

約数ペア:

[(1, 21051578877), (3, 7017192959), (7, 3007368411), (21, 1002456137), (29, 725916513), (87, 241972171), (203, 103702359), (223, 94401699), (379, 55545063), (409, 51470853), (609, 34567453), (669, 31467233), (1137, 18515021), (1227, 17156951), (1561, 13485957), (2653, 7935009), (2863, 7352979), (4683, 4495319), (6467, 3255231), (7959, 2645003), (8589, 2450993), (10991, 1915347), (11861, 1774857), (19401, 1085077), (32973, 638449), (35583, 591619), (45269, 465033), (76937, 273621), (83027, 253551), (84517, 249081), (91207, 230811), (135807, 155011)]