21176757

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{173}}^1$

素因数の和:282

約数の個数: 48

約数和(自身を含む): 36915840

約数和(自身を除く): 15739083

約数列:

[1, 3, 7, 9, 21, 29, 63, 67, 87, 173, 201, 203, 261, 469, 519, 603, 609, 1211, 1407, 1557, 1827, 1943, 3633, 4221, 5017, 5829, 10899, 11591, 13601, 15051, 17487, 34773, 35119, 40803, 45153, 81137, 104319, 105357, 122409, 243411, 316071, 336139, 730233, 1008417, 2352973, 3025251, 7058919, 21176757]

約数ペア:

[(1, 21176757), (3, 7058919), (7, 3025251), (9, 2352973), (21, 1008417), (29, 730233), (63, 336139), (67, 316071), (87, 243411), (173, 122409), (201, 105357), (203, 104319), (261, 81137), (469, 45153), (519, 40803), (603, 35119), (609, 34773), (1211, 17487), (1407, 15051), (1557, 13601), (1827, 11591), (1943, 10899), (3633, 5829), (4221, 5017)]