20785290400

素因数分解:

$2^5\times 5^2\times 7^2\times {\mathrm{530237}}^1$

素因数の和:530271

約数の個数: 108

約数和(自身を含む): 59026624398

約数和(自身を除く): 38241333998

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 49, 50, 56, 70, 80, 98, 100, 112, 140, 160, 175, 196, 200, 224, 245, 280, 350, 392, 400, 490, 560, 700, 784, 800, 980, 1120, 1225, 1400, 1568, 1960, 2450, 2800, 3920, 4900, 5600, 7840, 9800, 19600, 39200, 530237, 1060474, 2120948, 2651185, 3711659, 4241896, 5302370, 7423318, 8483792, 10604740, 13255925, 14846636, 16967584, 18558295, 21209480, 25981613, 26511850, 29693272, 37116590, 42418960, 51963226, 53023700, 59386544, 74233180, 84837920, 92791475, 103926452, 106047400, 118773088, 129908065, 148466360, 185582950, 207852904, 212094800, 259816130, 296932720, 371165900, 415705808, 424189600, 519632260, 593865440, 649540325, 742331800, 831411616, 1039264520, 1299080650, 1484663600, 2078529040, 2598161300, 2969327200, 4157058080, 5196322600, 10392645200, 20785290400]

約数ペア:

[(1, 20785290400), (2, 10392645200), (4, 5196322600), (5, 4157058080), (7, 2969327200), (8, 2598161300), (10, 2078529040), (14, 1484663600), (16, 1299080650), (20, 1039264520), (25, 831411616), (28, 742331800), (32, 649540325), (35, 593865440), (40, 519632260), (49, 424189600), (50, 415705808), (56, 371165900), (70, 296932720), (80, 259816130), (98, 212094800), (100, 207852904), (112, 185582950), (140, 148466360), (160, 129908065), (175, 118773088), (196, 106047400), (200, 103926452), (224, 92791475), (245, 84837920), (280, 74233180), (350, 59386544), (392, 53023700), (400, 51963226), (490, 42418960), (560, 37116590), (700, 29693272), (784, 26511850), (800, 25981613), (980, 21209480), (1120, 18558295), (1225, 16967584), (1400, 14846636), (1568, 13255925), (1960, 10604740), (2450, 8483792), (2800, 7423318), (3920, 5302370), (4900, 4241896), (5600, 3711659), (7840, 2651185), (9800, 2120948), (19600, 1060474), (39200, 530237)]