257387718

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{18973}}^1$

素因数の和:19021

約数の個数: 64

約数和(自身を含む): 655741440

約数和(自身を除く): 398353722

約数列:

[1, 2, 3, 6, 7, 14, 17, 19, 21, 34, 38, 42, 51, 57, 102, 114, 119, 133, 238, 266, 323, 357, 399, 646, 714, 798, 969, 1938, 2261, 4522, 6783, 13566, 18973, 37946, 56919, 113838, 132811, 265622, 322541, 360487, 398433, 645082, 720974, 796866, 967623, 1081461, 1935246, 2162922, 2257787, 2523409, 4515574, 5046818, 6128279, 6773361, 7570227, 12256558, 13546722, 15140454, 18384837, 36769674, 42897953, 85795906, 128693859, 257387718]

約数ペア:

[(1, 257387718), (2, 128693859), (3, 85795906), (6, 42897953), (7, 36769674), (14, 18384837), (17, 15140454), (19, 13546722), (21, 12256558), (34, 7570227), (38, 6773361), (42, 6128279), (51, 5046818), (57, 4515574), (102, 2523409), (114, 2257787), (119, 2162922), (133, 1935246), (238, 1081461), (266, 967623), (323, 796866), (357, 720974), (399, 645082), (646, 398433), (714, 360487), (798, 322541), (969, 265622), (1938, 132811), (2261, 113838), (4522, 56919), (6783, 37946), (13566, 18973)]