19413820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1087}}^1$

素因数の和:1162

約数の個数: 48

約数和(自身を含む): 43868160

約数和(自身を除く): 24454340

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 47, 76, 94, 95, 188, 190, 235, 380, 470, 893, 940, 1087, 1786, 2174, 3572, 4348, 4465, 5435, 8930, 10870, 17860, 20653, 21740, 41306, 51089, 82612, 102178, 103265, 204356, 206530, 255445, 413060, 510890, 970691, 1021780, 1941382, 3882764, 4853455, 9706910, 19413820]

約数ペア:

[(1, 19413820), (2, 9706910), (4, 4853455), (5, 3882764), (10, 1941382), (19, 1021780), (20, 970691), (38, 510890), (47, 413060), (76, 255445), (94, 206530), (95, 204356), (188, 103265), (190, 102178), (235, 82612), (380, 51089), (470, 41306), (893, 21740), (940, 20653), (1087, 17860), (1786, 10870), (2174, 8930), (3572, 5435), (4348, 4465)]