21538590

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1303}}^1$

素因数の和:1361

約数の個数: 64

約数和(自身を含む): 56332800

約数和(自身を除く): 34794210

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 29, 30, 38, 57, 58, 87, 95, 114, 145, 174, 190, 285, 290, 435, 551, 570, 870, 1102, 1303, 1653, 2606, 2755, 3306, 3909, 5510, 6515, 7818, 8265, 13030, 16530, 19545, 24757, 37787, 39090, 49514, 74271, 75574, 113361, 123785, 148542, 188935, 226722, 247570, 371355, 377870, 566805, 717953, 742710, 1133610, 1435906, 2153859, 3589765, 4307718, 7179530, 10769295, 21538590]

約数ペア:

[(1, 21538590), (2, 10769295), (3, 7179530), (5, 4307718), (6, 3589765), (10, 2153859), (15, 1435906), (19, 1133610), (29, 742710), (30, 717953), (38, 566805), (57, 377870), (58, 371355), (87, 247570), (95, 226722), (114, 188935), (145, 148542), (174, 123785), (190, 113361), (285, 75574), (290, 74271), (435, 49514), (551, 39090), (570, 37787), (870, 24757), (1102, 19545), (1303, 16530), (1653, 13030), (2606, 8265), (2755, 7818), (3306, 6515), (3909, 5510)]