21617876

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{337}}^1$

素因数の和:456

約数の個数: 48

約数和(自身を含む): 45427200

約数和(自身を除く): 23809324

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 79, 116, 158, 203, 316, 337, 406, 553, 674, 812, 1106, 1348, 2212, 2291, 2359, 4582, 4718, 9164, 9436, 9773, 16037, 19546, 26623, 32074, 39092, 53246, 64148, 68411, 106492, 136822, 186361, 273644, 372722, 745444, 772067, 1544134, 3088268, 5404469, 10808938, 21617876]

約数ペア:

[(1, 21617876), (2, 10808938), (4, 5404469), (7, 3088268), (14, 1544134), (28, 772067), (29, 745444), (58, 372722), (79, 273644), (116, 186361), (158, 136822), (203, 106492), (316, 68411), (337, 64148), (406, 53246), (553, 39092), (674, 32074), (812, 26623), (1106, 19546), (1348, 16037), (2212, 9773), (2291, 9436), (2359, 9164), (4582, 4718)]