261969876

素因数分解:

$2^2\times 3^4\times 7^2\times {\mathrm{29}}^1\times {\mathrm{569}}^1$

素因数の和:628

約数の個数: 180

約数和(自身を含む): 825570900

約数和(自身を除く): 563601024

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 29, 36, 42, 49, 54, 58, 63, 81, 84, 87, 98, 108, 116, 126, 147, 162, 174, 189, 196, 203, 252, 261, 294, 324, 348, 378, 406, 441, 522, 567, 569, 588, 609, 756, 783, 812, 882, 1044, 1134, 1138, 1218, 1323, 1421, 1566, 1707, 1764, 1827, 2268, 2276, 2349, 2436, 2646, 2842, 3132, 3414, 3654, 3969, 3983, 4263, 4698, 5121, 5292, 5481, 5684, 6828, 7308, 7938, 7966, 8526, 9396, 10242, 10962, 11949, 12789, 15363, 15876, 15932, 16443, 16501, 17052, 20484, 21924, 23898, 25578, 27881, 30726, 32886, 33002, 35847, 38367, 46089, 47796, 49503, 51156, 55762, 61452, 65772, 66004, 71694, 76734, 83643, 92178, 99006, 107541, 111524, 115101, 115507, 143388, 148509, 153468, 167286, 184356, 198012, 215082, 230202, 231014, 250929, 297018, 322623, 334572, 346521, 430164, 445527, 460404, 462028, 501858, 594036, 645246, 693042, 752787, 808549, 891054, 1003716, 1039563, 1290492, 1336581, 1386084, 1505574, 1617098, 1782108, 2079126, 2258361, 2425647, 2673162, 3011148, 3118689, 3234196, 4158252, 4516722, 4851294, 5346324, 6237378, 7276941, 9033444, 9356067, 9702588, 12474756, 14553882, 18712134, 21830823, 29107764, 37424268, 43661646, 65492469, 87323292, 130984938, 261969876]

約数ペア:

[(1, 261969876), (2, 130984938), (3, 87323292), (4, 65492469), (6, 43661646), (7, 37424268), (9, 29107764), (12, 21830823), (14, 18712134), (18, 14553882), (21, 12474756), (27, 9702588), (28, 9356067), (29, 9033444), (36, 7276941), (42, 6237378), (49, 5346324), (54, 4851294), (58, 4516722), (63, 4158252), (81, 3234196), (84, 3118689), (87, 3011148), (98, 2673162), (108, 2425647), (116, 2258361), (126, 2079126), (147, 1782108), (162, 1617098), (174, 1505574), (189, 1386084), (196, 1336581), (203, 1290492), (252, 1039563), (261, 1003716), (294, 891054), (324, 808549), (348, 752787), (378, 693042), (406, 645246), (441, 594036), (522, 501858), (567, 462028), (569, 460404), (588, 445527), (609, 430164), (756, 346521), (783, 334572), (812, 322623), (882, 297018), (1044, 250929), (1134, 231014), (1138, 230202), (1218, 215082), (1323, 198012), (1421, 184356), (1566, 167286), (1707, 153468), (1764, 148509), (1827, 143388), (2268, 115507), (2276, 115101), (2349, 111524), (2436, 107541), (2646, 99006), (2842, 92178), (3132, 83643), (3414, 76734), (3654, 71694), (3969, 66004), (3983, 65772), (4263, 61452), (4698, 55762), (5121, 51156), (5292, 49503), (5481, 47796), (5684, 46089), (6828, 38367), (7308, 35847), (7938, 33002), (7966, 32886), (8526, 30726), (9396, 27881), (10242, 25578), (10962, 23898), (11949, 21924), (12789, 20484), (15363, 17052), (15876, 16501), (15932, 16443)]