20685280

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1$

素因数の和:129

約数の個数: 192

約数和(自身を含む): 64447488

約数和(自身を除く): 43762208

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 23, 28, 32, 35, 40, 44, 46, 55, 56, 70, 73, 77, 80, 88, 92, 110, 112, 115, 140, 146, 154, 160, 161, 176, 184, 220, 224, 230, 253, 280, 292, 308, 322, 352, 365, 368, 385, 440, 460, 506, 511, 560, 584, 616, 644, 730, 736, 770, 803, 805, 880, 920, 1012, 1022, 1120, 1168, 1232, 1265, 1288, 1460, 1540, 1606, 1610, 1679, 1760, 1771, 1840, 2024, 2044, 2336, 2464, 2530, 2555, 2576, 2920, 3080, 3212, 3220, 3358, 3542, 3680, 4015, 4048, 4088, 5060, 5110, 5152, 5621, 5840, 6160, 6424, 6440, 6716, 7084, 8030, 8096, 8176, 8395, 8855, 10120, 10220, 11242, 11680, 11753, 12320, 12848, 12880, 13432, 14168, 16060, 16352, 16790, 17710, 18469, 20240, 20440, 22484, 23506, 25696, 25760, 26864, 28105, 28336, 32120, 33580, 35420, 36938, 40480, 40880, 44968, 47012, 53728, 56210, 56672, 58765, 64240, 67160, 70840, 73876, 81760, 89936, 92345, 94024, 112420, 117530, 128480, 129283, 134320, 141680, 147752, 179872, 184690, 188048, 224840, 235060, 258566, 268640, 283360, 295504, 369380, 376096, 449680, 470120, 517132, 591008, 646415, 738760, 899360, 940240, 1034264, 1292830, 1477520, 1880480, 2068528, 2585660, 2955040, 4137056, 5171320, 10342640, 20685280]

約数ペア:

[(1, 20685280), (2, 10342640), (4, 5171320), (5, 4137056), (7, 2955040), (8, 2585660), (10, 2068528), (11, 1880480), (14, 1477520), (16, 1292830), (20, 1034264), (22, 940240), (23, 899360), (28, 738760), (32, 646415), (35, 591008), (40, 517132), (44, 470120), (46, 449680), (55, 376096), (56, 369380), (70, 295504), (73, 283360), (77, 268640), (80, 258566), (88, 235060), (92, 224840), (110, 188048), (112, 184690), (115, 179872), (140, 147752), (146, 141680), (154, 134320), (160, 129283), (161, 128480), (176, 117530), (184, 112420), (220, 94024), (224, 92345), (230, 89936), (253, 81760), (280, 73876), (292, 70840), (308, 67160), (322, 64240), (352, 58765), (365, 56672), (368, 56210), (385, 53728), (440, 47012), (460, 44968), (506, 40880), (511, 40480), (560, 36938), (584, 35420), (616, 33580), (644, 32120), (730, 28336), (736, 28105), (770, 26864), (803, 25760), (805, 25696), (880, 23506), (920, 22484), (1012, 20440), (1022, 20240), (1120, 18469), (1168, 17710), (1232, 16790), (1265, 16352), (1288, 16060), (1460, 14168), (1540, 13432), (1606, 12880), (1610, 12848), (1679, 12320), (1760, 11753), (1771, 11680), (1840, 11242), (2024, 10220), (2044, 10120), (2336, 8855), (2464, 8395), (2530, 8176), (2555, 8096), (2576, 8030), (2920, 7084), (3080, 6716), (3212, 6440), (3220, 6424), (3358, 6160), (3542, 5840), (3680, 5621), (4015, 5152), (4048, 5110), (4088, 5060)]