21815948

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{367}}^1$

素因数の和:582

約数の個数: 48

約数和(自身を含む): 47975424

約数和(自身を除く): 26159476

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 193, 308, 367, 386, 734, 772, 1351, 1468, 2123, 2569, 2702, 4037, 4246, 5138, 5404, 8074, 8492, 10276, 14861, 16148, 28259, 29722, 56518, 59444, 70831, 113036, 141662, 283324, 495817, 779141, 991634, 1558282, 1983268, 3116564, 5453987, 10907974, 21815948]

約数ペア:

[(1, 21815948), (2, 10907974), (4, 5453987), (7, 3116564), (11, 1983268), (14, 1558282), (22, 991634), (28, 779141), (44, 495817), (77, 283324), (154, 141662), (193, 113036), (308, 70831), (367, 59444), (386, 56518), (734, 29722), (772, 28259), (1351, 16148), (1468, 14861), (2123, 10276), (2569, 8492), (2702, 8074), (4037, 5404), (4246, 5138)]