1628649040

素因数分解:

$2^4\times 5^1\times {\mathrm{991}}^1\times {\mathrm{20543}}^1$

素因数の和:21547

約数の個数: 40

約数和(自身を含む): 3790614528

約数和(自身を除く): 2161965488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 991, 1982, 3964, 4955, 7928, 9910, 15856, 19820, 20543, 39640, 41086, 79280, 82172, 102715, 164344, 205430, 328688, 410860, 821720, 1643440, 20358113, 40716226, 81432452, 101790565, 162864904, 203581130, 325729808, 407162260, 814324520, 1628649040]

約数ペア:

[(1, 1628649040), (2, 814324520), (4, 407162260), (5, 325729808), (8, 203581130), (10, 162864904), (16, 101790565), (20, 81432452), (40, 40716226), (80, 20358113), (991, 1643440), (1982, 821720), (3964, 410860), (4955, 328688), (7928, 205430), (9910, 164344), (15856, 102715), (19820, 82172), (20543, 79280), (39640, 41086)]