81046980

素因数分解:

$2^2\times 3^4\times 5^1\times 7^2\times {\mathrm{1021}}^1$

素因数の和:1056

約数の個数: 180

約数和(自身を含む): 296046828

約数和(自身を除く): 214999848

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 81, 84, 90, 98, 105, 108, 126, 135, 140, 147, 162, 180, 189, 196, 210, 245, 252, 270, 294, 315, 324, 378, 405, 420, 441, 490, 540, 567, 588, 630, 735, 756, 810, 882, 945, 980, 1021, 1134, 1260, 1323, 1470, 1620, 1764, 1890, 2042, 2205, 2268, 2646, 2835, 2940, 3063, 3780, 3969, 4084, 4410, 5105, 5292, 5670, 6126, 6615, 7147, 7938, 8820, 9189, 10210, 11340, 12252, 13230, 14294, 15315, 15876, 18378, 19845, 20420, 21441, 26460, 27567, 28588, 30630, 35735, 36756, 39690, 42882, 45945, 50029, 55134, 61260, 64323, 71470, 79380, 82701, 85764, 91890, 100058, 107205, 110268, 128646, 137835, 142940, 150087, 165402, 183780, 192969, 200116, 214410, 250145, 257292, 275670, 300174, 321615, 330804, 385938, 413505, 428820, 450261, 500290, 551340, 578907, 600348, 643230, 750435, 771876, 827010, 900522, 964845, 1000580, 1157814, 1286460, 1350783, 1500870, 1654020, 1801044, 1929690, 2251305, 2315628, 2701566, 2894535, 3001740, 3859380, 4052349, 4502610, 5403132, 5789070, 6753915, 8104698, 9005220, 11578140, 13507830, 16209396, 20261745, 27015660, 40523490, 81046980]

約数ペア:

[(1, 81046980), (2, 40523490), (3, 27015660), (4, 20261745), (5, 16209396), (6, 13507830), (7, 11578140), (9, 9005220), (10, 8104698), (12, 6753915), (14, 5789070), (15, 5403132), (18, 4502610), (20, 4052349), (21, 3859380), (27, 3001740), (28, 2894535), (30, 2701566), (35, 2315628), (36, 2251305), (42, 1929690), (45, 1801044), (49, 1654020), (54, 1500870), (60, 1350783), (63, 1286460), (70, 1157814), (81, 1000580), (84, 964845), (90, 900522), (98, 827010), (105, 771876), (108, 750435), (126, 643230), (135, 600348), (140, 578907), (147, 551340), (162, 500290), (180, 450261), (189, 428820), (196, 413505), (210, 385938), (245, 330804), (252, 321615), (270, 300174), (294, 275670), (315, 257292), (324, 250145), (378, 214410), (405, 200116), (420, 192969), (441, 183780), (490, 165402), (540, 150087), (567, 142940), (588, 137835), (630, 128646), (735, 110268), (756, 107205), (810, 100058), (882, 91890), (945, 85764), (980, 82701), (1021, 79380), (1134, 71470), (1260, 64323), (1323, 61260), (1470, 55134), (1620, 50029), (1764, 45945), (1890, 42882), (2042, 39690), (2205, 36756), (2268, 35735), (2646, 30630), (2835, 28588), (2940, 27567), (3063, 26460), (3780, 21441), (3969, 20420), (4084, 19845), (4410, 18378), (5105, 15876), (5292, 15315), (5670, 14294), (6126, 13230), (6615, 12252), (7147, 11340), (7938, 10210), (8820, 9189)]