21311276

素因数分解:

$2^2\times 7^5\times {\mathrm{317}}^1$

素因数の和:356

約数の個数: 36

約数和(自身を含む): 43647408

約数和(自身を除く): 22336132

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 317, 343, 634, 686, 1268, 1372, 2219, 2401, 4438, 4802, 8876, 9604, 15533, 16807, 31066, 33614, 62132, 67228, 108731, 217462, 434924, 761117, 1522234, 3044468, 5327819, 10655638, 21311276]

約数ペア:

[(1, 21311276), (2, 10655638), (4, 5327819), (7, 3044468), (14, 1522234), (28, 761117), (49, 434924), (98, 217462), (196, 108731), (317, 67228), (343, 62132), (634, 33614), (686, 31066), (1268, 16807), (1372, 15533), (2219, 9604), (2401, 8876), (4438, 4802)]