20177808280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{713501}}^1$

素因数の和:713620

約数の個数: 64

約数和(自身を含む): 52399586880

約数和(自身を除く): 32221778600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 101, 140, 202, 280, 404, 505, 707, 808, 1010, 1414, 2020, 2828, 3535, 4040, 5656, 7070, 14140, 28280, 713501, 1427002, 2854004, 3567505, 4994507, 5708008, 7135010, 9989014, 14270020, 19978028, 24972535, 28540040, 39956056, 49945070, 72063601, 99890140, 144127202, 199780280, 288254404, 360318005, 504445207, 576508808, 720636010, 1008890414, 1441272020, 2017780828, 2522226035, 2882544040, 4035561656, 5044452070, 10088904140, 20177808280]

約数ペア:

[(1, 20177808280), (2, 10088904140), (4, 5044452070), (5, 4035561656), (7, 2882544040), (8, 2522226035), (10, 2017780828), (14, 1441272020), (20, 1008890414), (28, 720636010), (35, 576508808), (40, 504445207), (56, 360318005), (70, 288254404), (101, 199780280), (140, 144127202), (202, 99890140), (280, 72063601), (404, 49945070), (505, 39956056), (707, 28540040), (808, 24972535), (1010, 19978028), (1414, 14270020), (2020, 9989014), (2828, 7135010), (3535, 5708008), (4040, 4994507), (5656, 3567505), (7070, 2854004), (14140, 1427002), (28280, 713501)]