21267056

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{193}}^1$

素因数の和:369

約数の個数: 40

約数和(自身を含む): 42434784

約数和(自身を除く): 21167728

約数列:

[1, 2, 4, 8, 16, 71, 97, 142, 193, 194, 284, 386, 388, 568, 772, 776, 1136, 1544, 1552, 3088, 6887, 13703, 13774, 18721, 27406, 27548, 37442, 54812, 55096, 74884, 109624, 110192, 149768, 219248, 299536, 1329191, 2658382, 5316764, 10633528, 21267056]

約数ペア:

[(1, 21267056), (2, 10633528), (4, 5316764), (8, 2658382), (16, 1329191), (71, 299536), (97, 219248), (142, 149768), (193, 110192), (194, 109624), (284, 74884), (386, 55096), (388, 54812), (568, 37442), (772, 27548), (776, 27406), (1136, 18721), (1544, 13774), (1552, 13703), (3088, 6887)]