80506020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{197}}^1$

素因数の和:362

約数の個数: 144

約数和(自身を含む): 265446720

約数和(自身を除く): 184940700

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, 139, 140, 147, 196, 197, 210, 245, 278, 294, 394, 417, 420, 490, 556, 588, 591, 695, 735, 788, 834, 973, 980, 985, 1182, 1379, 1390, 1470, 1668, 1946, 1970, 2085, 2364, 2758, 2780, 2919, 2940, 2955, 3892, 3940, 4137, 4170, 4865, 5516, 5838, 5910, 6811, 6895, 8274, 8340, 9653, 9730, 11676, 11820, 13622, 13790, 14595, 16548, 19306, 19460, 20433, 20685, 27244, 27383, 27580, 28959, 29190, 34055, 38612, 40866, 41370, 48265, 54766, 57918, 58380, 68110, 81732, 82149, 82740, 96530, 102165, 109532, 115836, 136220, 136915, 144795, 164298, 191681, 193060, 204330, 273830, 289590, 328596, 383362, 408660, 410745, 547660, 575043, 579180, 766724, 821490, 958405, 1150086, 1341767, 1642980, 1916810, 2300172, 2683534, 2875215, 3833620, 4025301, 5367068, 5750430, 6708835, 8050602, 11500860, 13417670, 16101204, 20126505, 26835340, 40253010, 80506020]

約数ペア:

[(1, 80506020), (2, 40253010), (3, 26835340), (4, 20126505), (5, 16101204), (6, 13417670), (7, 11500860), (10, 8050602), (12, 6708835), (14, 5750430), (15, 5367068), (20, 4025301), (21, 3833620), (28, 2875215), (30, 2683534), (35, 2300172), (42, 1916810), (49, 1642980), (60, 1341767), (70, 1150086), (84, 958405), (98, 821490), (105, 766724), (139, 579180), (140, 575043), (147, 547660), (196, 410745), (197, 408660), (210, 383362), (245, 328596), (278, 289590), (294, 273830), (394, 204330), (417, 193060), (420, 191681), (490, 164298), (556, 144795), (588, 136915), (591, 136220), (695, 115836), (735, 109532), (788, 102165), (834, 96530), (973, 82740), (980, 82149), (985, 81732), (1182, 68110), (1379, 58380), (1390, 57918), (1470, 54766), (1668, 48265), (1946, 41370), (1970, 40866), (2085, 38612), (2364, 34055), (2758, 29190), (2780, 28959), (2919, 27580), (2940, 27383), (2955, 27244), (3892, 20685), (3940, 20433), (4137, 19460), (4170, 19306), (4865, 16548), (5516, 14595), (5838, 13790), (5910, 13622), (6811, 11820), (6895, 11676), (8274, 9730), (8340, 9653)]