80990140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{683}}^1$

素因数の和:728

約数の個数: 108

約数和(自身を含む): 217786968

約数和(自身を除く): 136796828

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 121, 140, 154, 196, 220, 242, 245, 308, 385, 484, 490, 539, 605, 683, 770, 847, 980, 1078, 1210, 1366, 1540, 1694, 2156, 2420, 2695, 2732, 3388, 3415, 4235, 4781, 5390, 5929, 6830, 7513, 8470, 9562, 10780, 11858, 13660, 15026, 16940, 19124, 23716, 23905, 29645, 30052, 33467, 37565, 47810, 52591, 59290, 66934, 75130, 82643, 95620, 105182, 118580, 133868, 150260, 165286, 167335, 210364, 262955, 330572, 334670, 368137, 413215, 525910, 578501, 669340, 736274, 826430, 1051820, 1157002, 1472548, 1652860, 1840685, 2314004, 2892505, 3681370, 4049507, 5785010, 7362740, 8099014, 11570020, 16198028, 20247535, 40495070, 80990140]

約数ペア:

[(1, 80990140), (2, 40495070), (4, 20247535), (5, 16198028), (7, 11570020), (10, 8099014), (11, 7362740), (14, 5785010), (20, 4049507), (22, 3681370), (28, 2892505), (35, 2314004), (44, 1840685), (49, 1652860), (55, 1472548), (70, 1157002), (77, 1051820), (98, 826430), (110, 736274), (121, 669340), (140, 578501), (154, 525910), (196, 413215), (220, 368137), (242, 334670), (245, 330572), (308, 262955), (385, 210364), (484, 167335), (490, 165286), (539, 150260), (605, 133868), (683, 118580), (770, 105182), (847, 95620), (980, 82643), (1078, 75130), (1210, 66934), (1366, 59290), (1540, 52591), (1694, 47810), (2156, 37565), (2420, 33467), (2695, 30052), (2732, 29645), (3388, 23905), (3415, 23716), (4235, 19124), (4781, 16940), (5390, 15026), (5929, 13660), (6830, 11858), (7513, 10780), (8470, 9562)]