21148938

素因数分解:

$2^1\times 3^4\times {\mathrm{19}}^1\times {\mathrm{6871}}^1$

素因数の和:6904

約数の個数: 40

約数和(自身を含む): 49890720

約数和(自身を除く): 28741782

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 81, 114, 162, 171, 342, 513, 1026, 1539, 3078, 6871, 13742, 20613, 41226, 61839, 123678, 130549, 185517, 261098, 371034, 391647, 556551, 783294, 1113102, 1174941, 2349882, 3524823, 7049646, 10574469, 21148938]

約数ペア:

[(1, 21148938), (2, 10574469), (3, 7049646), (6, 3524823), (9, 2349882), (18, 1174941), (19, 1113102), (27, 783294), (38, 556551), (54, 391647), (57, 371034), (81, 261098), (114, 185517), (162, 130549), (171, 123678), (342, 61839), (513, 41226), (1026, 20613), (1539, 13742), (3078, 6871)]