19914320

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:252

約数の個数: 80

約数和(自身を含む): 49282560

約数和(自身を除く): 29368240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 79, 80, 92, 115, 137, 158, 184, 230, 274, 316, 368, 395, 460, 548, 632, 685, 790, 920, 1096, 1264, 1370, 1580, 1817, 1840, 2192, 2740, 3151, 3160, 3634, 5480, 6302, 6320, 7268, 9085, 10823, 10960, 12604, 14536, 15755, 18170, 21646, 25208, 29072, 31510, 36340, 43292, 50416, 54115, 63020, 72680, 86584, 108230, 126040, 145360, 173168, 216460, 248929, 252080, 432920, 497858, 865840, 995716, 1244645, 1991432, 2489290, 3982864, 4978580, 9957160, 19914320]

約数ペア:

[(1, 19914320), (2, 9957160), (4, 4978580), (5, 3982864), (8, 2489290), (10, 1991432), (16, 1244645), (20, 995716), (23, 865840), (40, 497858), (46, 432920), (79, 252080), (80, 248929), (92, 216460), (115, 173168), (137, 145360), (158, 126040), (184, 108230), (230, 86584), (274, 72680), (316, 63020), (368, 54115), (395, 50416), (460, 43292), (548, 36340), (632, 31510), (685, 29072), (790, 25208), (920, 21646), (1096, 18170), (1264, 15755), (1370, 14536), (1580, 12604), (1817, 10960), (1840, 10823), (2192, 9085), (2740, 7268), (3151, 6320), (3160, 6302), (3634, 5480)]