28197540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{139}}^1$

素因数の和:191

約数の個数: 216

約数和(自身を含む): 104569920

約数和(自身を除く): 76372380

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 23, 28, 30, 35, 36, 42, 45, 46, 49, 60, 63, 69, 70, 84, 90, 92, 98, 105, 115, 126, 138, 139, 140, 147, 161, 180, 196, 207, 210, 230, 245, 252, 276, 278, 294, 315, 322, 345, 414, 417, 420, 441, 460, 483, 490, 556, 588, 630, 644, 690, 695, 735, 805, 828, 834, 882, 966, 973, 980, 1035, 1127, 1251, 1260, 1380, 1390, 1449, 1470, 1610, 1668, 1764, 1932, 1946, 2070, 2085, 2205, 2254, 2415, 2502, 2780, 2898, 2919, 2940, 3197, 3220, 3381, 3892, 4140, 4170, 4410, 4508, 4830, 4865, 5004, 5635, 5796, 5838, 6255, 6394, 6762, 6811, 7245, 8340, 8757, 8820, 9591, 9660, 9730, 10143, 11270, 11676, 12510, 12788, 13524, 13622, 14490, 14595, 15985, 16905, 17514, 19182, 19460, 20286, 20433, 22379, 22540, 25020, 27244, 28773, 28980, 29190, 31970, 33810, 34055, 35028, 38364, 40572, 40866, 43785, 44758, 47955, 50715, 57546, 58380, 61299, 63940, 67137, 67620, 68110, 81732, 87570, 89516, 95910, 101430, 102165, 111895, 115092, 122598, 134274, 136220, 143865, 156653, 175140, 191820, 201411, 202860, 204330, 223790, 245196, 268548, 287730, 306495, 313306, 335685, 402822, 408660, 447580, 469959, 575460, 612990, 626612, 671370, 783265, 805644, 939918, 1007055, 1225980, 1342740, 1409877, 1566530, 1879836, 2014110, 2349795, 2819754, 3133060, 4028220, 4699590, 5639508, 7049385, 9399180, 14098770, 28197540]

約数ペア:

[(1, 28197540), (2, 14098770), (3, 9399180), (4, 7049385), (5, 5639508), (6, 4699590), (7, 4028220), (9, 3133060), (10, 2819754), (12, 2349795), (14, 2014110), (15, 1879836), (18, 1566530), (20, 1409877), (21, 1342740), (23, 1225980), (28, 1007055), (30, 939918), (35, 805644), (36, 783265), (42, 671370), (45, 626612), (46, 612990), (49, 575460), (60, 469959), (63, 447580), (69, 408660), (70, 402822), (84, 335685), (90, 313306), (92, 306495), (98, 287730), (105, 268548), (115, 245196), (126, 223790), (138, 204330), (139, 202860), (140, 201411), (147, 191820), (161, 175140), (180, 156653), (196, 143865), (207, 136220), (210, 134274), (230, 122598), (245, 115092), (252, 111895), (276, 102165), (278, 101430), (294, 95910), (315, 89516), (322, 87570), (345, 81732), (414, 68110), (417, 67620), (420, 67137), (441, 63940), (460, 61299), (483, 58380), (490, 57546), (556, 50715), (588, 47955), (630, 44758), (644, 43785), (690, 40866), (695, 40572), (735, 38364), (805, 35028), (828, 34055), (834, 33810), (882, 31970), (966, 29190), (973, 28980), (980, 28773), (1035, 27244), (1127, 25020), (1251, 22540), (1260, 22379), (1380, 20433), (1390, 20286), (1449, 19460), (1470, 19182), (1610, 17514), (1668, 16905), (1764, 15985), (1932, 14595), (1946, 14490), (2070, 13622), (2085, 13524), (2205, 12788), (2254, 12510), (2415, 11676), (2502, 11270), (2780, 10143), (2898, 9730), (2919, 9660), (2940, 9591), (3197, 8820), (3220, 8757), (3381, 8340), (3892, 7245), (4140, 6811), (4170, 6762), (4410, 6394), (4508, 6255), (4830, 5838), (4865, 5796), (5004, 5635)]