28167920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{32009}}^1$

素因数の和:32033

約数の個数: 40

約数和(自身を含む): 71446320

約数和(自身を除く): 43278400

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 32009, 64018, 128036, 160045, 256072, 320090, 352099, 512144, 640180, 704198, 1280360, 1408396, 1760495, 2560720, 2816792, 3520990, 5633584, 7041980, 14083960, 28167920]

約数ペア:

[(1, 28167920), (2, 14083960), (4, 7041980), (5, 5633584), (8, 3520990), (10, 2816792), (11, 2560720), (16, 1760495), (20, 1408396), (22, 1280360), (40, 704198), (44, 640180), (55, 512144), (80, 352099), (88, 320090), (110, 256072), (176, 160045), (220, 128036), (440, 64018), (880, 32009)]