21009828

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{35731}}^1$

素因数の和:35752

約数の個数: 36

約数和(自身を含む): 57028272

約数和(自身を除く): 36018444

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 196, 294, 588, 35731, 71462, 107193, 142924, 214386, 250117, 428772, 500234, 750351, 1000468, 1500702, 1750819, 3001404, 3501638, 5252457, 7003276, 10504914, 21009828]

約数ペア:

[(1, 21009828), (2, 10504914), (3, 7003276), (4, 5252457), (6, 3501638), (7, 3001404), (12, 1750819), (14, 1500702), (21, 1000468), (28, 750351), (42, 500234), (49, 428772), (84, 250117), (98, 214386), (147, 142924), (196, 107193), (294, 71462), (588, 35731)]