20718558

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{59}}^1\times {\mathrm{929}}^1$

素因数の和:1006

約数の個数: 64

約数和(自身を含む): 53568000

約数和(自身を除く): 32849442

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 59, 63, 118, 126, 177, 189, 354, 378, 413, 531, 826, 929, 1062, 1239, 1593, 1858, 2478, 2787, 3186, 3717, 5574, 6503, 7434, 8361, 11151, 13006, 16722, 19509, 22302, 25083, 39018, 50166, 54811, 58527, 109622, 117054, 164433, 175581, 328866, 351162, 383677, 493299, 767354, 986598, 1151031, 1479897, 2302062, 2959794, 3453093, 6906186, 10359279, 20718558]

約数ペア:

[(1, 20718558), (2, 10359279), (3, 6906186), (6, 3453093), (7, 2959794), (9, 2302062), (14, 1479897), (18, 1151031), (21, 986598), (27, 767354), (42, 493299), (54, 383677), (59, 351162), (63, 328866), (118, 175581), (126, 164433), (177, 117054), (189, 109622), (354, 58527), (378, 54811), (413, 50166), (531, 39018), (826, 25083), (929, 22302), (1062, 19509), (1239, 16722), (1593, 13006), (1858, 11151), (2478, 8361), (2787, 7434), (3186, 6503), (3717, 5574)]