19493110

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{691}}^1$

素因数の和:749

約数の個数: 64

約数和(自身を含む): 44642304

約数和(自身を除く): 25149194

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 31, 35, 62, 65, 70, 91, 130, 155, 182, 217, 310, 403, 434, 455, 691, 806, 910, 1085, 1382, 2015, 2170, 2821, 3455, 4030, 4837, 5642, 6910, 8983, 9674, 14105, 17966, 21421, 24185, 28210, 42842, 44915, 48370, 62881, 89830, 107105, 125762, 149947, 214210, 278473, 299894, 314405, 556946, 628810, 749735, 1392365, 1499470, 1949311, 2784730, 3898622, 9746555, 19493110]

約数ペア:

[(1, 19493110), (2, 9746555), (5, 3898622), (7, 2784730), (10, 1949311), (13, 1499470), (14, 1392365), (26, 749735), (31, 628810), (35, 556946), (62, 314405), (65, 299894), (70, 278473), (91, 214210), (130, 149947), (155, 125762), (182, 107105), (217, 89830), (310, 62881), (403, 48370), (434, 44915), (455, 42842), (691, 28210), (806, 24185), (910, 21421), (1085, 17966), (1382, 14105), (2015, 9674), (2170, 8983), (2821, 6910), (3455, 5642), (4030, 4837)]