21361984

素因数分解:

$2^6\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1163}}^1$

素因数の和:1223

約数の個数: 56

約数和(自身を含む): 49670208

約数和(自身を除く): 28308224

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 41, 56, 64, 82, 112, 164, 224, 287, 328, 448, 574, 656, 1148, 1163, 1312, 2296, 2326, 2624, 4592, 4652, 8141, 9184, 9304, 16282, 18368, 18608, 32564, 37216, 47683, 65128, 74432, 95366, 130256, 190732, 260512, 333781, 381464, 521024, 667562, 762928, 1335124, 1525856, 2670248, 3051712, 5340496, 10680992, 21361984]

約数ペア:

[(1, 21361984), (2, 10680992), (4, 5340496), (7, 3051712), (8, 2670248), (14, 1525856), (16, 1335124), (28, 762928), (32, 667562), (41, 521024), (56, 381464), (64, 333781), (82, 260512), (112, 190732), (164, 130256), (224, 95366), (287, 74432), (328, 65128), (448, 47683), (574, 37216), (656, 32564), (1148, 18608), (1163, 18368), (1312, 16282), (2296, 9304), (2326, 9184), (2624, 8141), (4592, 4652)]