19958176

素因数分解:

$2^5\times 7^1\times {\mathrm{139}}^1\times {\mathrm{641}}^1$

素因数の和:797

約数の個数: 48

約数和(自身を含む): 45299520

約数和(自身を除く): 25341344

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 139, 224, 278, 556, 641, 973, 1112, 1282, 1946, 2224, 2564, 3892, 4448, 4487, 5128, 7784, 8974, 10256, 15568, 17948, 20512, 31136, 35896, 71792, 89099, 143584, 178198, 356396, 623693, 712792, 1247386, 1425584, 2494772, 2851168, 4989544, 9979088, 19958176]

約数ペア:

[(1, 19958176), (2, 9979088), (4, 4989544), (7, 2851168), (8, 2494772), (14, 1425584), (16, 1247386), (28, 712792), (32, 623693), (56, 356396), (112, 178198), (139, 143584), (224, 89099), (278, 71792), (556, 35896), (641, 31136), (973, 20512), (1112, 17948), (1282, 15568), (1946, 10256), (2224, 8974), (2564, 7784), (3892, 5128), (4448, 4487)]