21200914

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{661}}^1$

素因数の和:778

約数の個数: 32

約数和(自身を含む): 38131200

約数和(自身を除く): 16930286

約数列:

[1, 2, 7, 14, 29, 58, 79, 158, 203, 406, 553, 661, 1106, 1322, 2291, 4582, 4627, 9254, 16037, 19169, 32074, 38338, 52219, 104438, 134183, 268366, 365533, 731066, 1514351, 3028702, 10600457, 21200914]

約数ペア:

[(1, 21200914), (2, 10600457), (7, 3028702), (14, 1514351), (29, 731066), (58, 365533), (79, 268366), (158, 134183), (203, 104438), (406, 52219), (553, 38338), (661, 32074), (1106, 19169), (1322, 16037), (2291, 9254), (4582, 4627)]