81380880

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{241}}^1$

素因数の和:334

約数の個数: 240

約数和(自身を含む): 318324864

約数和(自身を除く): 236943984

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 67, 70, 72, 80, 84, 90, 105, 112, 120, 126, 134, 140, 144, 168, 180, 201, 210, 240, 241, 252, 268, 280, 315, 335, 336, 360, 402, 420, 469, 482, 504, 536, 560, 603, 630, 670, 720, 723, 804, 840, 938, 964, 1005, 1008, 1072, 1205, 1206, 1260, 1340, 1407, 1446, 1608, 1680, 1687, 1876, 1928, 2010, 2169, 2345, 2410, 2412, 2520, 2680, 2814, 2892, 3015, 3216, 3374, 3615, 3752, 3856, 4020, 4221, 4338, 4690, 4820, 4824, 5040, 5061, 5360, 5628, 5784, 6030, 6748, 7035, 7230, 7504, 8040, 8435, 8442, 8676, 9380, 9640, 9648, 10122, 10845, 11256, 11568, 12060, 13496, 14070, 14460, 15183, 16080, 16147, 16870, 16884, 17352, 18760, 19280, 20244, 21105, 21690, 22512, 24120, 25305, 26992, 28140, 28920, 30366, 32294, 33740, 33768, 34704, 37520, 40488, 42210, 43380, 48240, 48441, 50610, 56280, 57840, 60732, 64588, 67480, 67536, 75915, 80735, 80976, 84420, 86760, 96882, 101220, 112560, 113029, 121464, 129176, 134960, 145323, 151830, 161470, 168840, 173520, 193764, 202440, 226058, 242205, 242928, 258352, 290646, 303660, 322940, 337680, 339087, 387528, 404880, 452116, 484410, 565145, 581292, 607320, 645880, 678174, 726615, 775056, 904232, 968820, 1017261, 1130290, 1162584, 1214640, 1291760, 1356348, 1453230, 1695435, 1808464, 1937640, 2034522, 2260580, 2325168, 2712696, 2906460, 3390870, 3875280, 4069044, 4521160, 5086305, 5425392, 5812920, 6781740, 8138088, 9042320, 10172610, 11625840, 13563480, 16276176, 20345220, 27126960, 40690440, 81380880]

約数ペア:

[(1, 81380880), (2, 40690440), (3, 27126960), (4, 20345220), (5, 16276176), (6, 13563480), (7, 11625840), (8, 10172610), (9, 9042320), (10, 8138088), (12, 6781740), (14, 5812920), (15, 5425392), (16, 5086305), (18, 4521160), (20, 4069044), (21, 3875280), (24, 3390870), (28, 2906460), (30, 2712696), (35, 2325168), (36, 2260580), (40, 2034522), (42, 1937640), (45, 1808464), (48, 1695435), (56, 1453230), (60, 1356348), (63, 1291760), (67, 1214640), (70, 1162584), (72, 1130290), (80, 1017261), (84, 968820), (90, 904232), (105, 775056), (112, 726615), (120, 678174), (126, 645880), (134, 607320), (140, 581292), (144, 565145), (168, 484410), (180, 452116), (201, 404880), (210, 387528), (240, 339087), (241, 337680), (252, 322940), (268, 303660), (280, 290646), (315, 258352), (335, 242928), (336, 242205), (360, 226058), (402, 202440), (420, 193764), (469, 173520), (482, 168840), (504, 161470), (536, 151830), (560, 145323), (603, 134960), (630, 129176), (670, 121464), (720, 113029), (723, 112560), (804, 101220), (840, 96882), (938, 86760), (964, 84420), (1005, 80976), (1008, 80735), (1072, 75915), (1205, 67536), (1206, 67480), (1260, 64588), (1340, 60732), (1407, 57840), (1446, 56280), (1608, 50610), (1680, 48441), (1687, 48240), (1876, 43380), (1928, 42210), (2010, 40488), (2169, 37520), (2345, 34704), (2410, 33768), (2412, 33740), (2520, 32294), (2680, 30366), (2814, 28920), (2892, 28140), (3015, 26992), (3216, 25305), (3374, 24120), (3615, 22512), (3752, 21690), (3856, 21105), (4020, 20244), (4221, 19280), (4338, 18760), (4690, 17352), (4820, 16884), (4824, 16870), (5040, 16147), (5061, 16080), (5360, 15183), (5628, 14460), (5784, 14070), (6030, 13496), (6748, 12060), (7035, 11568), (7230, 11256), (7504, 10845), (8040, 10122), (8435, 9648), (8442, 9640), (8676, 9380)]