81865980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1511}}^1$

素因数の和:1576

約数の個数: 144

約数和(自身を含む): 290594304

約数和(自身を除く): 208728324

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 43, 45, 60, 63, 70, 84, 86, 90, 105, 126, 129, 140, 172, 180, 210, 215, 252, 258, 301, 315, 387, 420, 430, 516, 602, 630, 645, 774, 860, 903, 1204, 1260, 1290, 1505, 1511, 1548, 1806, 1935, 2580, 2709, 3010, 3022, 3612, 3870, 4515, 4533, 5418, 6020, 6044, 7555, 7740, 9030, 9066, 10577, 10836, 13545, 13599, 15110, 18060, 18132, 21154, 22665, 27090, 27198, 30220, 31731, 42308, 45330, 52885, 54180, 54396, 63462, 64973, 67995, 90660, 95193, 105770, 126924, 129946, 135990, 158655, 190386, 194919, 211540, 259892, 271980, 317310, 324865, 380772, 389838, 454811, 475965, 584757, 634620, 649730, 779676, 909622, 951930, 974595, 1169514, 1299460, 1364433, 1819244, 1903860, 1949190, 2274055, 2339028, 2728866, 2923785, 3898380, 4093299, 4548110, 5457732, 5847570, 6822165, 8186598, 9096220, 11695140, 13644330, 16373196, 20466495, 27288660, 40932990, 81865980]

約数ペア:

[(1, 81865980), (2, 40932990), (3, 27288660), (4, 20466495), (5, 16373196), (6, 13644330), (7, 11695140), (9, 9096220), (10, 8186598), (12, 6822165), (14, 5847570), (15, 5457732), (18, 4548110), (20, 4093299), (21, 3898380), (28, 2923785), (30, 2728866), (35, 2339028), (36, 2274055), (42, 1949190), (43, 1903860), (45, 1819244), (60, 1364433), (63, 1299460), (70, 1169514), (84, 974595), (86, 951930), (90, 909622), (105, 779676), (126, 649730), (129, 634620), (140, 584757), (172, 475965), (180, 454811), (210, 389838), (215, 380772), (252, 324865), (258, 317310), (301, 271980), (315, 259892), (387, 211540), (420, 194919), (430, 190386), (516, 158655), (602, 135990), (630, 129946), (645, 126924), (774, 105770), (860, 95193), (903, 90660), (1204, 67995), (1260, 64973), (1290, 63462), (1505, 54396), (1511, 54180), (1548, 52885), (1806, 45330), (1935, 42308), (2580, 31731), (2709, 30220), (3010, 27198), (3022, 27090), (3612, 22665), (3870, 21154), (4515, 18132), (4533, 18060), (5418, 15110), (6020, 13599), (6044, 13545), (7555, 10836), (7740, 10577), (9030, 9066)]