81700920

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1$

素因数の和:235

約数の個数: 256

約数和(自身を含む): 317260800

約数和(自身を除く): 235559880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 84, 90, 101, 105, 107, 108, 120, 126, 135, 140, 168, 180, 189, 202, 210, 214, 216, 252, 270, 280, 303, 315, 321, 360, 378, 404, 420, 428, 504, 505, 535, 540, 606, 630, 642, 707, 749, 756, 808, 840, 856, 909, 945, 963, 1010, 1070, 1080, 1212, 1260, 1284, 1414, 1498, 1512, 1515, 1605, 1818, 1890, 1926, 2020, 2121, 2140, 2247, 2424, 2520, 2568, 2727, 2828, 2889, 2996, 3030, 3210, 3535, 3636, 3745, 3780, 3852, 4040, 4242, 4280, 4494, 4545, 4815, 5454, 5656, 5778, 5992, 6060, 6363, 6420, 6741, 7070, 7272, 7490, 7560, 7704, 8484, 8988, 9090, 9630, 10605, 10807, 10908, 11235, 11556, 12120, 12726, 12840, 13482, 13635, 14140, 14445, 14980, 16968, 17976, 18180, 19089, 19260, 20223, 21210, 21614, 21816, 22470, 23112, 25452, 26964, 27270, 28280, 28890, 29960, 31815, 32421, 33705, 36360, 38178, 38520, 40446, 42420, 43228, 44940, 50904, 53928, 54035, 54540, 57780, 63630, 64842, 67410, 75649, 76356, 80892, 84840, 86456, 89880, 95445, 97263, 101115, 108070, 109080, 115560, 127260, 129684, 134820, 151298, 152712, 161784, 162105, 190890, 194526, 202230, 216140, 226947, 254520, 259368, 269640, 291789, 302596, 324210, 378245, 381780, 389052, 404460, 432280, 453894, 486315, 583578, 605192, 648420, 680841, 756490, 763560, 778104, 808920, 907788, 972630, 1134735, 1167156, 1296840, 1361682, 1458945, 1512980, 1815576, 1945260, 2042523, 2269470, 2334312, 2723364, 2917890, 3025960, 3404205, 3890520, 4085046, 4538940, 5446728, 5835780, 6808410, 8170092, 9077880, 10212615, 11671560, 13616820, 16340184, 20425230, 27233640, 40850460, 81700920]

約数ペア:

[(1, 81700920), (2, 40850460), (3, 27233640), (4, 20425230), (5, 16340184), (6, 13616820), (7, 11671560), (8, 10212615), (9, 9077880), (10, 8170092), (12, 6808410), (14, 5835780), (15, 5446728), (18, 4538940), (20, 4085046), (21, 3890520), (24, 3404205), (27, 3025960), (28, 2917890), (30, 2723364), (35, 2334312), (36, 2269470), (40, 2042523), (42, 1945260), (45, 1815576), (54, 1512980), (56, 1458945), (60, 1361682), (63, 1296840), (70, 1167156), (72, 1134735), (84, 972630), (90, 907788), (101, 808920), (105, 778104), (107, 763560), (108, 756490), (120, 680841), (126, 648420), (135, 605192), (140, 583578), (168, 486315), (180, 453894), (189, 432280), (202, 404460), (210, 389052), (214, 381780), (216, 378245), (252, 324210), (270, 302596), (280, 291789), (303, 269640), (315, 259368), (321, 254520), (360, 226947), (378, 216140), (404, 202230), (420, 194526), (428, 190890), (504, 162105), (505, 161784), (535, 152712), (540, 151298), (606, 134820), (630, 129684), (642, 127260), (707, 115560), (749, 109080), (756, 108070), (808, 101115), (840, 97263), (856, 95445), (909, 89880), (945, 86456), (963, 84840), (1010, 80892), (1070, 76356), (1080, 75649), (1212, 67410), (1260, 64842), (1284, 63630), (1414, 57780), (1498, 54540), (1512, 54035), (1515, 53928), (1605, 50904), (1818, 44940), (1890, 43228), (1926, 42420), (2020, 40446), (2121, 38520), (2140, 38178), (2247, 36360), (2424, 33705), (2520, 32421), (2568, 31815), (2727, 29960), (2828, 28890), (2889, 28280), (2996, 27270), (3030, 26964), (3210, 25452), (3535, 23112), (3636, 22470), (3745, 21816), (3780, 21614), (3852, 21210), (4040, 20223), (4242, 19260), (4280, 19089), (4494, 18180), (4545, 17976), (4815, 16968), (5454, 14980), (5656, 14445), (5778, 14140), (5992, 13635), (6060, 13482), (6363, 12840), (6420, 12726), (6741, 12120), (7070, 11556), (7272, 11235), (7490, 10908), (7560, 10807), (7704, 10605), (8484, 9630), (8988, 9090)]