21127456

素因数分解:

$2^5\times 7^1\times {\mathrm{257}}^1\times {\mathrm{367}}^1$

素因数の和:641

約数の個数: 48

約数和(自身を含む): 47851776

約数和(自身を除く): 26724320

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224, 257, 367, 514, 734, 1028, 1468, 1799, 2056, 2569, 2936, 3598, 4112, 5138, 5872, 7196, 8224, 10276, 11744, 14392, 20552, 28784, 41104, 57568, 82208, 94319, 188638, 377276, 660233, 754552, 1320466, 1509104, 2640932, 3018208, 5281864, 10563728, 21127456]

約数ペア:

[(1, 21127456), (2, 10563728), (4, 5281864), (7, 3018208), (8, 2640932), (14, 1509104), (16, 1320466), (28, 754552), (32, 660233), (56, 377276), (112, 188638), (224, 94319), (257, 82208), (367, 57568), (514, 41104), (734, 28784), (1028, 20552), (1468, 14392), (1799, 11744), (2056, 10276), (2569, 8224), (2936, 7196), (3598, 5872), (4112, 5138)]