21050329280

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2122009}}^1$

素因数の和:2122057

約数の個数: 56

約数和(自身を含む): 51743091840

約数和(自身を除く): 30692762560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2480, 4960, 9920, 2122009, 4244018, 8488036, 10610045, 16976072, 21220090, 33952144, 42440180, 65782279, 67904288, 84880360, 131564558, 135808576, 169760720, 263129116, 328911395, 339521440, 526258232, 657822790, 679042880, 1052516464, 1315645580, 2105032928, 2631291160, 4210065856, 5262582320, 10525164640, 21050329280]

約数ペア:

[(1, 21050329280), (2, 10525164640), (4, 5262582320), (5, 4210065856), (8, 2631291160), (10, 2105032928), (16, 1315645580), (20, 1052516464), (31, 679042880), (32, 657822790), (40, 526258232), (62, 339521440), (64, 328911395), (80, 263129116), (124, 169760720), (155, 135808576), (160, 131564558), (248, 84880360), (310, 67904288), (320, 65782279), (496, 42440180), (620, 33952144), (992, 21220090), (1240, 16976072), (1984, 10610045), (2480, 8488036), (4960, 4244018), (9920, 2122009)]