28391440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{419}}^1$

素因数の和:461

約数の個数: 120

約数和(自身を含む): 83119680

約数和(自身を除く): 54728240

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 121, 140, 154, 176, 220, 242, 280, 308, 385, 419, 440, 484, 560, 605, 616, 770, 838, 847, 880, 968, 1210, 1232, 1540, 1676, 1694, 1936, 2095, 2420, 2933, 3080, 3352, 3388, 4190, 4235, 4609, 4840, 5866, 6160, 6704, 6776, 8380, 8470, 9218, 9680, 11732, 13552, 14665, 16760, 16940, 18436, 23045, 23464, 29330, 32263, 33520, 33880, 36872, 46090, 46928, 50699, 58660, 64526, 67760, 73744, 92180, 101398, 117320, 129052, 161315, 184360, 202796, 234640, 253495, 258104, 322630, 354893, 368720, 405592, 506990, 516208, 645260, 709786, 811184, 1013980, 1290520, 1419572, 1774465, 2027960, 2581040, 2839144, 3548930, 4055920, 5678288, 7097860, 14195720, 28391440]

約数ペア:

[(1, 28391440), (2, 14195720), (4, 7097860), (5, 5678288), (7, 4055920), (8, 3548930), (10, 2839144), (11, 2581040), (14, 2027960), (16, 1774465), (20, 1419572), (22, 1290520), (28, 1013980), (35, 811184), (40, 709786), (44, 645260), (55, 516208), (56, 506990), (70, 405592), (77, 368720), (80, 354893), (88, 322630), (110, 258104), (112, 253495), (121, 234640), (140, 202796), (154, 184360), (176, 161315), (220, 129052), (242, 117320), (280, 101398), (308, 92180), (385, 73744), (419, 67760), (440, 64526), (484, 58660), (560, 50699), (605, 46928), (616, 46090), (770, 36872), (838, 33880), (847, 33520), (880, 32263), (968, 29330), (1210, 23464), (1232, 23045), (1540, 18436), (1676, 16940), (1694, 16760), (1936, 14665), (2095, 13552), (2420, 11732), (2933, 9680), (3080, 9218), (3352, 8470), (3388, 8380), (4190, 6776), (4235, 6704), (4609, 6160), (4840, 5866)]