20900460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{7109}}^1$

素因数の和:7135

約数の個数: 72

約数和(自身を含む): 68085360

約数和(自身を除く): 47184900

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 7109, 14218, 21327, 28436, 35545, 42654, 49763, 71090, 85308, 99526, 106635, 142180, 149289, 199052, 213270, 248815, 298578, 348341, 426540, 497630, 597156, 696682, 746445, 995260, 1045023, 1393364, 1492890, 1741705, 2090046, 2985780, 3483410, 4180092, 5225115, 6966820, 10450230, 20900460]

約数ペア:

[(1, 20900460), (2, 10450230), (3, 6966820), (4, 5225115), (5, 4180092), (6, 3483410), (7, 2985780), (10, 2090046), (12, 1741705), (14, 1492890), (15, 1393364), (20, 1045023), (21, 995260), (28, 746445), (30, 696682), (35, 597156), (42, 497630), (49, 426540), (60, 348341), (70, 298578), (84, 248815), (98, 213270), (105, 199052), (140, 149289), (147, 142180), (196, 106635), (210, 99526), (245, 85308), (294, 71090), (420, 49763), (490, 42654), (588, 35545), (735, 28436), (980, 21327), (1470, 14218), (2940, 7109)]