18888937767

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{971}}^1\times {\mathrm{4349}}^1$

素因数の和:5404

約数の個数: 48

約数和(自身を含む): 31660761600

約数和(自身を除く): 12771823833

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 971, 1491, 2913, 4349, 4473, 6797, 8739, 13047, 20391, 30443, 39141, 61173, 68941, 91329, 206823, 273987, 308779, 482587, 620469, 926337, 1447761, 2161453, 2779011, 4222879, 4343283, 6484359, 12668637, 19453077, 29560153, 38005911, 88680459, 266041377, 299824409, 899473227, 2098770863, 2698419681, 6296312589, 18888937767]

約数ペア:

[(1, 18888937767), (3, 6296312589), (7, 2698419681), (9, 2098770863), (21, 899473227), (63, 299824409), (71, 266041377), (213, 88680459), (497, 38005911), (639, 29560153), (971, 19453077), (1491, 12668637), (2913, 6484359), (4349, 4343283), (4473, 4222879), (6797, 2779011), (8739, 2161453), (13047, 1447761), (20391, 926337), (30443, 620469), (39141, 482587), (61173, 308779), (68941, 273987), (91329, 206823)]