28157220

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1$

素因数の和:232

約数の個数: 240

約数和(自身を含む): 109283328

約数和(自身を除く): 81126108

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 27, 28, 30, 35, 36, 39, 42, 45, 52, 54, 60, 63, 65, 70, 78, 81, 84, 90, 91, 105, 108, 117, 126, 130, 135, 140, 156, 162, 180, 182, 189, 191, 195, 210, 234, 252, 260, 270, 273, 315, 324, 351, 364, 378, 382, 390, 405, 420, 455, 468, 540, 546, 567, 573, 585, 630, 702, 756, 764, 780, 810, 819, 910, 945, 955, 1053, 1092, 1134, 1146, 1170, 1260, 1337, 1365, 1404, 1620, 1638, 1719, 1755, 1820, 1890, 1910, 2106, 2268, 2292, 2340, 2457, 2483, 2674, 2730, 2835, 2865, 3276, 3438, 3510, 3780, 3820, 4011, 4095, 4212, 4914, 4966, 5157, 5265, 5348, 5460, 5670, 5730, 6685, 6876, 7020, 7371, 7449, 8022, 8190, 8595, 9828, 9932, 10314, 10530, 11340, 11460, 12033, 12285, 12415, 13370, 14742, 14898, 15471, 16044, 16380, 17190, 17381, 20055, 20628, 21060, 22347, 24066, 24570, 24830, 25785, 26740, 29484, 29796, 30942, 34380, 34762, 36099, 36855, 37245, 40110, 44694, 48132, 49140, 49660, 51570, 52143, 60165, 61884, 67041, 69524, 72198, 73710, 74490, 77355, 80220, 86905, 89388, 103140, 104286, 108297, 111735, 120330, 134082, 144396, 147420, 148980, 154710, 156429, 173810, 180495, 201123, 208572, 216594, 223470, 240660, 260715, 268164, 309420, 312858, 335205, 347620, 360990, 402246, 433188, 446940, 469287, 521430, 541485, 625716, 670410, 721980, 782145, 804492, 938574, 1005615, 1042860, 1082970, 1340820, 1407861, 1564290, 1877148, 2011230, 2165940, 2346435, 2815722, 3128580, 4022460, 4692870, 5631444, 7039305, 9385740, 14078610, 28157220]

約数ペア:

[(1, 28157220), (2, 14078610), (3, 9385740), (4, 7039305), (5, 5631444), (6, 4692870), (7, 4022460), (9, 3128580), (10, 2815722), (12, 2346435), (13, 2165940), (14, 2011230), (15, 1877148), (18, 1564290), (20, 1407861), (21, 1340820), (26, 1082970), (27, 1042860), (28, 1005615), (30, 938574), (35, 804492), (36, 782145), (39, 721980), (42, 670410), (45, 625716), (52, 541485), (54, 521430), (60, 469287), (63, 446940), (65, 433188), (70, 402246), (78, 360990), (81, 347620), (84, 335205), (90, 312858), (91, 309420), (105, 268164), (108, 260715), (117, 240660), (126, 223470), (130, 216594), (135, 208572), (140, 201123), (156, 180495), (162, 173810), (180, 156429), (182, 154710), (189, 148980), (191, 147420), (195, 144396), (210, 134082), (234, 120330), (252, 111735), (260, 108297), (270, 104286), (273, 103140), (315, 89388), (324, 86905), (351, 80220), (364, 77355), (378, 74490), (382, 73710), (390, 72198), (405, 69524), (420, 67041), (455, 61884), (468, 60165), (540, 52143), (546, 51570), (567, 49660), (573, 49140), (585, 48132), (630, 44694), (702, 40110), (756, 37245), (764, 36855), (780, 36099), (810, 34762), (819, 34380), (910, 30942), (945, 29796), (955, 29484), (1053, 26740), (1092, 25785), (1134, 24830), (1146, 24570), (1170, 24066), (1260, 22347), (1337, 21060), (1365, 20628), (1404, 20055), (1620, 17381), (1638, 17190), (1719, 16380), (1755, 16044), (1820, 15471), (1890, 14898), (1910, 14742), (2106, 13370), (2268, 12415), (2292, 12285), (2340, 12033), (2457, 11460), (2483, 11340), (2674, 10530), (2730, 10314), (2835, 9932), (2865, 9828), (3276, 8595), (3438, 8190), (3510, 8022), (3780, 7449), (3820, 7371), (4011, 7020), (4095, 6876), (4212, 6685), (4914, 5730), (4966, 5670), (5157, 5460), (5265, 5348)]