19785920

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{73}}^1$

素因数の和:119

約数の個数: 168

約数和(自身を含む): 59996832

約数和(自身を除く): 40210912

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 55, 56, 64, 70, 73, 77, 80, 88, 110, 112, 121, 140, 146, 154, 160, 176, 220, 224, 242, 280, 292, 308, 320, 352, 365, 385, 440, 448, 484, 511, 560, 584, 605, 616, 704, 730, 770, 803, 847, 880, 968, 1022, 1120, 1168, 1210, 1232, 1460, 1540, 1606, 1694, 1760, 1936, 2044, 2240, 2336, 2420, 2464, 2555, 2920, 3080, 3212, 3388, 3520, 3872, 4015, 4088, 4235, 4672, 4840, 4928, 5110, 5621, 5840, 6160, 6424, 6776, 7744, 8030, 8176, 8470, 8833, 9680, 10220, 11242, 11680, 12320, 12848, 13552, 16060, 16352, 16940, 17666, 19360, 20440, 22484, 23360, 24640, 25696, 27104, 28105, 32120, 32704, 33880, 35332, 38720, 40880, 44165, 44968, 51392, 54208, 56210, 61831, 64240, 67760, 70664, 81760, 88330, 89936, 112420, 123662, 128480, 135520, 141328, 163520, 176660, 179872, 224840, 247324, 256960, 271040, 282656, 309155, 353320, 359744, 449680, 494648, 565312, 618310, 706640, 899360, 989296, 1236620, 1413280, 1798720, 1978592, 2473240, 2826560, 3957184, 4946480, 9892960, 19785920]

約数ペア:

[(1, 19785920), (2, 9892960), (4, 4946480), (5, 3957184), (7, 2826560), (8, 2473240), (10, 1978592), (11, 1798720), (14, 1413280), (16, 1236620), (20, 989296), (22, 899360), (28, 706640), (32, 618310), (35, 565312), (40, 494648), (44, 449680), (55, 359744), (56, 353320), (64, 309155), (70, 282656), (73, 271040), (77, 256960), (80, 247324), (88, 224840), (110, 179872), (112, 176660), (121, 163520), (140, 141328), (146, 135520), (154, 128480), (160, 123662), (176, 112420), (220, 89936), (224, 88330), (242, 81760), (280, 70664), (292, 67760), (308, 64240), (320, 61831), (352, 56210), (365, 54208), (385, 51392), (440, 44968), (448, 44165), (484, 40880), (511, 38720), (560, 35332), (584, 33880), (605, 32704), (616, 32120), (704, 28105), (730, 27104), (770, 25696), (803, 24640), (847, 23360), (880, 22484), (968, 20440), (1022, 19360), (1120, 17666), (1168, 16940), (1210, 16352), (1232, 16060), (1460, 13552), (1540, 12848), (1606, 12320), (1694, 11680), (1760, 11242), (1936, 10220), (2044, 9680), (2240, 8833), (2336, 8470), (2420, 8176), (2464, 8030), (2555, 7744), (2920, 6776), (3080, 6424), (3212, 6160), (3388, 5840), (3520, 5621), (3872, 5110), (4015, 4928), (4088, 4840), (4235, 4672)]